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International

FY 2023

1. (Oral) Takumi Sato, Haruki Takenaka, Rui Du, Yoichiro Koda, Masami Mesuda, Kaoru Toko, and Takashi Suemasu
   " Control of hole concentration of B implanted sputter-deposited BaSi2 films by post annealing and its solar cell application "
   34th International Photovoltaics Science and Engineering Conference (PVSEC-34), Area3 3FrO8, Shenzhen, China, Nov. 10 (2023).
2. (Poster) Sho Aonuki, Carlos Mario Ruiz Tobon, Rudi Santbergen, Olindo Isabella, and Takashi Suemasu
   " Device modeling of HTL/BaSi2 heterojunction solar cells by optical simulations"
   40th European Photovoltaic Solar Energy Conference and Exhibition, 2BV.1.18, Lisbon, Portugal, Sept. 19 (2023).
3. (poster) Yuguang Cao, Jean-Marie Mouesca, Sho Aonuki, Serge Gambarelli, and Takashi Suemasu
   " Research on boron and oxygen related defects in barium disilicide thin films by Density Functional Theory method "
   40th European Photovoltaic Solar Energy Conference and Exhibition, 2BV.1.15, Lisbon, Portugal, Sept. 18 (2023).
4. (Oral) Rui Du, Sho Aonuki, Hayato Hasebe, Kazuki Kido, Haruki Takenaka, Masami Mesuda, Kaoru Toko, and Takashi Suemasu
   " Construction of novel BaSi2 solar cells by applying an a-SiC electron transport layer "
   40th European Photovoltaic Solar Energy Conference and Exhibition, 2AO.2_3, Lisbon, Portugal, Sept. 18 (2023).
5. (Oral) T. Nishida, T. Suemasu, and K. Toko
   " Near-infrared Photoresponsivity of Polycrystalline InGaAs Films for Flexible Multi-junction Solar Cells "
   2023 International Conference on Solid State Devices and Materials (SSDM2023), M-6-02, Nagoya, Sept. 8 (2023).
6. (Oral) T. Ishiyama, K. Nozawa, T. Suemasu, and K. Toko
   " Improvement of Thermoelectric Performance of Polycrystalline III-V Semiconductor Thin Films using Bayesian Optimization "
   2023 International Conference on Solid State Devices and Materials (SSDM2023), M-6-01, Nagoya, Sept. 8 (2023).
7. (Oral) K. Igura, S. Maeda, T. Ishiyama, T. Suemasu, and K. Toko
   " Exploration of Underlayers for Improving Crystal and Electrical Properties of Polycrystalline Ge Thin Films "
   2023 International Conference on Solid State Devices and Materials (SSDM2023), E-8-02, Nagoya, Sept. 8 (2023).
8. (Oral) R. Ito, T. Suemasu, and K. Toko
   " High-quality Multilayer Graphene Formed by Layer Exchange with Alloy Catalysts "
   2023 International Conference on Solid State Devices and Materials (SSDM2023), M-7-06, Nagoya, Sept. 8 (2023).
9. (Oral) L. Huang, K. Moto, T. Ishiyama, K. Toko, D. Wang, and K. Yamamoto
   " Inversion Mode n-channel TFT on Polycrystalline Ge Formed by Solid-Phase Crystallization "
   International Conference on Solid State Devices and Materials (SSDM2023), E-7-04, Nagoya, Sept. 8 (2023).
10. (Oral) K. Moto, K. Toko, T. Takayama, T. Ishiyama, and K. Yamamoto
    " Various Metal Contacts on Polycrystalline Ge with Amorphous Interlayer Formed by ZrN Sputter-Deposition "
    2023 International Conference on Solid State Devices and Materials (SSDM2023), M-4-04, Nagoya, Sept. 7 (2023).
11. (Poster) Sho Aonuki, Kaoru Toko, and Takashi Suemasu
    " Fabrication of MoOx/BaSi2 heterojunction solar cells"
    China-Japan International Symposium on Photonic Materials, 01, Shanghai, China, Aug. 01 (2023).
12. (poster) Yuguang Cao, Jean-Marie Mouesca, Sho Aonuki, Serge Gambarelli, and Takashi Suemasu
    " Study on boron and oxygen related defects in barium disilicide thin films by Density Functional Theory method "
    China-Japan International Symposium on Photonic Materials, 03, Shanghai, China, Aug. 01 (2023).
13. (Poster) Rui Du, Haruki Takenaka, Takumi Sato, Yoichiro Koda, Masami Mesuda, Kaoru Toko, and Takashi Suemasu
    " Defect analysis in BaSi2 film and BaSi2/a-SiC/TiN junction for solar cells "
    China-Japan International Symposium on Photonic Materials, 03, Shanghai, China, Aug. 01 (2023).
14. (Poster) Sho Aonuki, Carlos Mario Ruiz Tobon, Rudi Santbergen, Olindo Isabella, and Takashi Suemasu
    " Device modeling of HTL/BaSi2 heterojunction solar cells "
    IEEE Photovoltaics Specialists Conference, B1, San Juan, Puerto Rico, June 15 (2023).
15. (invited) Takamitsu Ishiyama, Kaoru Toko and Takashi Suemasu
    " Machine learning techniques for analyzing time evolution in microscope images "
    E-MRS 2023 Spring Meeting, I06-2356, Strasbourg, May 30 (2023).
16. (invited) Koki Nozawa, Takashi Suemasu, and Kaoru Toko
    " High carrier mobilities in polycrystalline germanium layers for flexible electronics "
    E-MRS 2023 Spring Meeting, I06-0775, Strasbourg, May 30 (2023).
17. (invited) Shintaro Maeda, Kaoru Toko and Takashi Suemasu
    " Thermoelectric application of Ge-based group IV semiconductor layers "
    E-MRS 2023 Spring Meeting, I06-2522, Strasbourg, May 30 (2023).
18. (invited) Aoi Hatate, Taro Komori, Tomohiro Yasuda, Takumi Horiuchi, Kenta Amemiya, Kaoru Toko and Takashi Suemasu
    " Epitaxial growths of Mn_4−xGa_xN films and their X-ray magnetic circular dichroism spectra "
    E-MRS 2023 Spring Meeting, I06-2533, Strasbourg, May 30 (2023).
19. (Oral) Aoi Hatate, Taro Komori, Tomohiro Yasuda, Takumi Horiuchi, Kenta Amemiya, Kaoru Toko and Takashi Suemasu
    " Ferrimagnet-ferromagnet phase transition in Mn_4−xGa_xN epitaxial films by X-ray magnetic circular dichroism "
    IEEE Intermag 2023, NOA-10, online, May 29 (2023).
20. (Oral) K. Moto, K. Toko, T. Takayama, T. Ishiyama, and K. Yamamoto
    " Control of Schottky Barrier Height at Metal/Polycrystalline Ge Interfaces with Fermi-Level Pinning Modulation "
    International Conference on Silicon Epitaxy and Heterostructures and International SiGe Technology and Device Meeting 2023 (ISTDM-ICSI 2023), Como, May 24 (2023).
21. Koki Nozawa, Takashi Suemasu, and Kaoru Toko
    " Record-High Electron Mobility in Polycrystalline GeSn Thin Films on Insulators "
    ISTDM-ICSI2023, Como, May 23 (2023).
22. (Oral) L. Huang, K. Moto, T. Ishiyama, K. Toko, D. Wang, and K. Yamamoto
    " Inversion Mode n-channel TFT on Polycrystalline Ge Formed by Solid-Phase Crystallization "
    13th International WorkShop on New Group IV Semiconductor Nanoelectronics, E-7, Sendai, Jan. 23 (2023).

FY 2022

23. (Oral) Sho Aonuki, Kaoru Toko, and Takashi Suemasu
    " Demonstration of P-ion-implanted n-BaSi2/p-Si solar cells "
    Grand Renewable Energy 2022 (GRE2022), Area2 100392, online, Dec. 19 (2022).
24. (Oral) Sho Aonuki, Kaoru Toko, Dmitri B. Migas and Takashi Suemasu
    " Atomic hydrogen passivation effect on BaSi2 films containing interstitial silicon atoms "
    33rd International Photovoltaics Science and Engineering Conference (PVSEC-33), WeO-32g-03, Nagoya, Nov. 16 (2022).
25. (Poster) Shunsuke Narita, Sho Aonuki, Kaori Takayanagi, Kaoru Toko and Takashi Suemasu
    " High-temperature post-annealing effect on BaSi2 solar cells grown by molecular beam epitaxy "
    33rd International Photovoltaics Science and Engineering Conference (PVSEC-33), WeP-32-52, Nagoya, Nov. 16 (2022).
26. (Poster) Kaori Takayanagi, Yudai Yamashita, Kaoru Toko and Takashi Suemasu
    " Surface passivation and carrier separation effects of Zn1-xGexOy interlayers for BaSi2 solar cells;
    33rd International Photovoltaics Science and Engineering Conference (PVSEC-33), TuP-32-10, Nagoya, Nov. 15 (2022).
27. (Poster) Haruki Takenaka, Hayato Hasebe, Kazuki Kido, Masami Mesuda, Kaoru Toko and Takashi Suemasu
    " Formation of p-NiO/n-BaSi2 hetero junction solar cells on glass substrates by radio-frequency sputtering "
    33rd International Photovoltaics Science and Engineering Conference (PVSEC-33), TuP-32-56, Nagoya, Nov. 15 (2022).
28. (Poster) Hayato Hasebe, Kazuki Kido, Haruki Takenaka, Masami Mesuda, Kaoru Toko and Takashi Suemasu
    " Formation and characterizations of sputter-deposited p-type polycrystalline BaSi2 films using B-doped Si target "
    33rd International Photovoltaics Science and Engineering Conference (PVSEC-33), TuP-32-55, Nagoya, Nov. 15 (2022).
29. Tomohiro Yasuda, Taro Komori, Taku Hirose, Takumi Horiuchi, Kaoru Toko and Takashi Suemasu
    " Epitaxial growth of Sn-doped Mn₄N films and their magneto-transport properties at room temperature "
    The 67th Annual Conference on Magnetism and Magnetic Materials (MMM 2022), FOD-05, Online, Nov. 7 (2022).
30. Takumi Horiuchi, Taro Komori, Taku Hirose, Tomohiro Yasuda, Kenta Amemiya, Kaoru Toko and Takashi Suemasu
    " Analysis of magneto-transport properties in Mn4-xAuxN epitaxial films and their magnetic structures by x-ray magnetic circular dichroism "
    The 67th Annual Conference on Magnetism and Magnetic Materials (MMM 2022), HOA-11, Online, Nov. 7 (2022).
31. (Oral) Shintaro Maeda, Tomoki Ozawa, Takashi Suemasu and Kaoru Toko
    " Group IV Semiconductor Alloy Thin Films for Environmentally Friendly Thermoelectric Generators "
    2022 International Conference on Solid State Devices and Materials（SSDM2022), C-1-01, Online, Sept. 27 (2022).
32. (Oral) Koki Nozawa, Takeshi Nishida, Takashi Suemasu and Kaoru Toko
    " Impact on N-type Impurities on Solid-phase Crystallization of Amorphous Ge "
    2022 International Conference on Solid State Devices and Materials（SSDM2022), B-3-03, Online, Sept. 27 (2022).
33. (Oral) Takeshi Nishida, Takashi Suemasu and Kaoru Toko
    " Large-grained GaAs Films Synthesized on Insulating Substrates for Flexible Solar Cells "
    The 22nd International Vacuum Congress（IVC-22), Mon-B1-5, Hokkaido, Sept. 12 (2022).
34. (Oral) Takamitsu Ishiyama, Toshifumi Imajo, Takashi Suemasu and Kaoru Toko
    " Polycrystalline Ge layer on plastic film leading to high carrier mobility "
    The 22nd International Vacuum Congress（IVC-22), Tue-E1-3, Hokkaido, Sept. 13 (2022).
35. (Oral) Taisei Suzuki, Takashi Suemasu and Kaoru Toko
    " Lithium-ion Battery Anode Operation of Multilayer Graphene Formed by Low-temperature Layer Exchange "
    The 22nd International Vacuum Congress（IVC-22), Tue-G2-7, Hokkaido, Sept. 13 (2022).
36. (Oral) Koki Nozawa, Hiromasa Murata, Takashi Suemasu and Kaoru Toko
    " Compositional Effects on Anode Properties of SiGe Formed by Al-Induced Layer-Exchange "
    The 22nd International Vacuum Congress（IVC-22), Tue-E1-4, Hokkaido, Sept. 13 (2022).
37. (Poster) Shintaro Maeda, Takamitsu Ishiyama, Toshifumi Imajo, Takashi Suemasu and Kaoru Toko
    " Grain size control of in solid-phase crystallization of Ge thin films using nucleation layer "
    The 22nd International Vacuum Congress（IVC-22), Tue-PO1B-6, Hokkaido, Sept. 13 (2022).
38. (Poster) Sho Aonuki, Kazuki Kido, Kaoru Toko and Takashi Suemasu
    " Evaluation of B-ion-implanted p-BaSi2 films and its solar cell application "
    The 22nd International Vacuum Congress（IVC-22), Wed-PO1B-7, Hokkaido, Sept. 13 (2022).
39. (Oral) Takeshi Nishida, Takashi Suemasu and Kaoru Toko
    " First Elucidation of the Correlation between Grain Size and Photoresponsivity in Polycrystalline GaAs Films "
    The 5th International Union of Materials Research Societies　International Conference of Young Researchers on Advanced Material（IURMS-ICYRAM 2022), E-O4-003, online, Japan, Aug. 4 (2022).
40. (Oral) Sho Aonuki, Kaoru Toko and Takashi Suemasu
    " The first solar cell application of P-ion-implanted n-BaSi2 films "
    The 5th International Union of Materials Research Societies　International Conference of Young Researchers on Advanced Material（IURMS-ICYRAM 2022), E-O4-004, Fukuoka, Japan, Aug. 4 (2022).
41. (Oral) Takamitsu Ishiyama, Takuto Mizoguchi, Toshifumi Imajo, Takashi Suemasu and Kaoru Toko
    " Demonstration of photoresponsivity in polycrystalline Ge-based thin films "
    The 5th International Union of Materials Research Societies　International Conference of Young Researchers on Advanced Material（IURMS-ICYRAM 2022), E-O4-002, online, Japan, Aug. 4 (2022).
42. (Oral) Koki Nozawa, Hiromasa Murata, Takashi Suemasu and Kaoru Toko
    " Low-temperature Synthesis of Si_1-xGe_x Layers for Flexible Battery Anodes "
    The 5th International Union of Materials Research Societies　International Conference of Young Researchers on Advanced Material（IURMS-ICYRAM 2022), E-O3-010, online, Japan, Aug. 3 (2022).
43. (Oral) Shintaro Maeda, Takamitsu Ishiyama, Toshifumi Imajo, Takashi Suemasu and Kaoru Toko
    " Nucleation control in the solid-phase crystallization of amorphous Ge layer leading to high hole mobility "
    The 5th International Union of Materials Research Societies　International Conference of Young Researchers on Advanced Material（IURMS-ICYRAM 2022), E-O3-005, online, Japan, Aug. 3 (2022).
44. (Oral) Sho Aonuki, Kaoru Toko and Takashi Suemasu
    " First demonstration of B-ion-implanted p-BaSi_{2/n-Si heterojunction solar cells;
    The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials , Sun-p-O12, online, July 31, 2022.}
45. (Poster) Yuguang Cao, Jean-Marie Mouesca, Serge Gambarelli, and T. Suemasu
    " EPR as a tool to discriminate between Boron related defects in BaSi₂ : a preliminary DFT study;
    The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials , P-II-11, online, July 31, 2022.
46. (Oral) Shunsuke Narita, Sho Aonuki, Kaoru Toko and Takashi Suemasu
    " High-temperature post-annealing effect on B-doped p-type BaSi₂/n-Si heterojunction solar cells grown by molecular beam epitaxy;
    The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials , Sun-p-O11, online, July 31, 2022.
47. (Poster) R. Du, H. Hasebe, K. Kido, M. Mesuda, K. Toko and T. Suemasu
    " Passivation effect of a-SiC on BaSi₂ films for solar cell applications;
    The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials , P-II-2, online, July 31, 2022.
48. (Poster) S. Hasebe, R. Koitabashi, K. Kido, Y. Yamashita, M. Mesuda, K. Toko and T. Suemasu
    " Characterizations of B-doped polycrystalline BaSi₂ films formed by sputtering;
    The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials , P-II-1, online, July 31, 2022.
49. (Oral) Kaori Yakayanagi, Yudai Yamashita, Kaoru Toko and Takashi Suemasu
    " Sputter-deposited Zn_1-xGe_xO_y for interlayers and electron transport layers of BaSi₂ solar cells;
    The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials , Sun-p-O14, online, July 31, 2022.
50. (Oral) H. Takenaka, H. Hasebe, K. Kido, R. Koitabashi, M.　Mesuda, K. Toko and T. Suemasu
    " Fabrication of p-NiO/n-BaSi₂ hetero-junction solar cells by radio-frequency sputtering;
    The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials , Sun-p-O13, online, July 31, 2022.
51. (Poster) Takeshi Nishida, Takashi Suemasu and Kaoru Toko
    " Large-grained GaAs Films Synthesized on Insulating Substrates for Flexible Solar Cells;
    The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials , P-II-5, online, July 31, 2022.
52. (Oral) Taisei Suzuki, Takashi Suemasu and Kaoru Toko
    " Effects of Layer Exchange Conditions o, f Multilayer Graphene on Anode Properties in Li-ion Batteries;
    The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials , Sun-a-O3, online, July 31, 2022.
53. (Oral) Takamitsu Ishiyama, Takashi Suemasu and Kaoru Toko
    " Automated and fast analysis of solid-phase growth properties using deep machine learning;
    The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials , Sun-a-O2, online, July 31, 2022.
54. (Oral) Koki Nozawa, Takeshi Nishida, Takashi Suemasu and Kaoru Toko
    " Solid-phase Crystallization of P-doped Amorphous Ge on Insulator Leading to the Highest Electron Mobility;
    The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials , Sun-a-O1, online, July 31, 2022.
55. (Poster) K. Kido, S. Hasebe, R. Koitabashi, M. Mesuda, K. Toko and T. Suemasu
    " High electron mobility of polycrystalline BaSi₂ films on insulating Si₃N₄ layers for thermoelectric applications;
    The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials , P-I-10, online, July 30, 2022.
56. (Oral) Shintaro Maeda, Tomoki Ozawa, Takashi Suemasu and Kaoru Toko
    " Thermoelectric Properties in Group IV Ternary Alloy Thin Films Formed by Advanced Solid-phase Crystallization;
    The 6th Asia-Pacific Conference on Semiconducting Silicides and Related Materials , Sat-p-O5, online, July 30, 2022.
57. (Oral) T. Komori, S. Ghosh, A. Hallal, J. P. Garcia, T. Gushi, T. Hirose, H. Mitarai, H. Okuno, J. Vogel, M. Chshiev, J.-P. Attané, L. Vila, T. Suemasu, and S. Pizzini
    " Current induced domain wall motion in Mn4-xNixN benefited from the compensation at room temperature "
    Joint European Magnetic Symposia、S13.6, Warsaw, Poland, July 28 (2022).
58. (Oral) Takamitsu Ishiyama, Toshifumi Imajo, Kenta Moto, Keisuke Yamamoto, Takashi Suemasu, and Kaoru Toko
    " Single-crystal-like Ge(110) layers for high-performance flexible thin film transistors "
    2022 MRS Spring, EQ06, Honolulu, May 23 (2022).
59. (Poster) T. Komori, S. Ghosh, A. Hallal, J. P. Garcia, T. Gushi, T. Hirose, H. Mitarai, H. Okuno, J. Vogel, M. Chshiev, L. Vila, T. Suemasu, S. Pizzini, J.-P. Attane
    " Current induced domain wall motion in comepnsated Mn_4-xNi_xN at room temperature and Ni composition ratio dependence of the properties "
    XXeme Colloque Louis Neel、PM-016, Obernai, France, Jan. 29 (2022).
60. (Oral) Taro Komori, Haruka Mitarai, Tomohiro Yasuda, Kaoru Toko, Syuta Honda and Takashi Suemasu,
    " Experimental and theoretical approach to magneto-transport properties in Mn_4-xNi_xN with high domain wall mobility "
    IEEE Joint MMM-Intermag Conference 2022, HOF-11, online, Jan. 10-14 (2022).
61. (Oral) Tomohiro Yasuda, Taro Komori, Haruka Mitarai, Kaoru Toko, Shuta Honda, Sambit Ghosh, Laurent Vila, Jean-philippe Attane, Kenta Amemiya, and Takashi Suemasu
    " Making ferrimagnetic Mn₄N ferromagnetic by non-magnetic element doping "
    IEEE Joint MMM-Intermag Conference 2022, HOF-07, online, Jan. 10-14 (2022).

FY 2021

62. (Oral) Yudai Yamashita, Kaoru Toko, and Takashi Suemasu,
    " Formation of Zn1-xGexO thin films as interlayers for n+-AZO/p-BaSi2 heterojunction solar cells, "
    Materials Research Meeting 2021 (MRM2021), E4-O6-03, Yokohama, Dec. 15, 2021.
63. (Poster) Taro Komori, Haruka Mitarai, Tomohiro Yasuda, Kaoru Toko, Syuta Honda and Takashi Suemasu
    " Magneto-transport properties in Mn_4-xNi_xN suitable for domain wall motion devices and the origins of its large anomalous Hall effect "
    Materials Research Meeting 2021, D2-PV22-47, online, Dec. 14, 2021.
64. (Oral) Yudai Yamashita, Kaoru Toko, and Takashi Suemasu,
    " Sputtering Zn1-xGexO thin films towards n+-AZO/p-BaSi2 heterojunction solar cells, "
    31st International Photovoltaics Science and Engineering Conference (PVSEC-31), 34, Online, Dec. 14, 2021.
65. (Oral) Sho Aonuki, Yudai Yamashita, Kazuhiro Gotoh, Kaoru Toko, Noritaka Usami, Dmitri B. Migas, and Takashi Suemasu,
    " Mechanism of atomic hydrogen passivation for optical properties improvement of As-doped BaSi2 films, "
    31st International Photovoltaics Science and Engineering Conference (PVSEC-31), 74, Online, Dec. 14, 2021.
66. (Poster) Ryota Koitabashi, Hayato Hasebe, Masami Mesuda, Kaoru Toko, and Takashi Suemasu,
    " Fabrication and characterization of BaSi2 films on glass substrates by RF co-sputtering of BaSi2 and Ba targets, "
    31st International Photovoltaics Science and Engineering Conference (PVSEC-31), 32, Online, Dec. 14, 2021.
67. (Oral) Takeshi Nishida, Takashi Suemasu, and Kaoru Toko,
    " III-V compound semiconductor thin films for energy harvesting devices, "
    Materials Research Meeting 2021 (MRM2021), E4-O1-06, Yokohama, Dec. 13, 2021.
68. Sho Aonuki, Shunsuke Narita, Kaoru Toko, Takashi Suemasu,
    " Notable improvement of the photoresponsivity of As-doped n-BaSi2 films by post-annealing "
    The 7th Southeast Asia Collaborative Symposium on Energy Materials (SACSEM 7th) S13, online, Nov. 17 (2021)
69. (Oral) Yudai Yamashita, Kaoru Toko, Olindo Isabella, and Takashi Suemasu,
    " Formation of n+-AZO/p-BaSi2 heterojunction solar cells with Zn1-xGexO interlayers, "
    2021 International Conferene on Solid State Devices and Materials (SSDM2021), F-4-05, Online, Sep, 8, 2021.
70. (Oral) Takuto Mizoguchi, Toshifumi Imajo, Kenta Moto, Takashi Suemasu, and Kaoru Toko,
    " First demonstration of photoresponsivity in a polycrystalline Ge-based thin film, "
    2021 International Conferene on Solid State Devices and Materials (SSDM2021), K-6-04, Online, Sep, 8, 2021.
71. (Oral) T. Ishiyama, T. Imajo, T. Suemasu, and K. Toko,
    " Ni-Induced Lateral Crystallization of Densified Amorphous Ge Layer, "
    2021 International Conference on Solid State Devices and Materials (SSDM 2021), K-6-03, Online, Sep. 8, 2021.
72. (Oral) Taisei Suzuki,Takashi Suemasu, and Kaoru Toko,
    " Effects of Layer Exchange Temperature of Multilayer Graphene on Anode Properties in Li-ion Batteries "
    2021 International Conferene on Solid State Devices and Materials (SSDM2021), J-4-02, Online, Sep, 8, 2021.
73. (Oral) Kenta Moto, K. Yamamoto, Toshifumi Imajo, Takashi Suemasu, Hiroshi Nakashima, and Kaoru Toko,
    " Sn Doping Effects on Polycrystalline Thin-Film Transistors on Glass, "
    2021 International Conferene on Solid State Devices and Materials (SSDM2021), K-6-03, Online, Sep, 7, 2021.
74. (Oral) Tomoki Ozawa, Toshifumi Imajo, Takashi Suemasu, and Kaoru Toko,
    " Solid-phase Diffusion Doping in Polycrystalline Ge Thin Films Leading to High Thermoelectric Power Factors, "
    2021 International Conferene on Solid State Devices and Materials (SSDM2021), F-1-04, Online, Sep, 7, 2021.
75. (invited) Kaoru Toko
    " Layer-exchange synthesis of multilayer graphene for flexible battery anodes, "
    The Fullerenes, Nanotubes and Graphene Conference (FNTG 61th), Online, Sept. 2, 2021.
76. (invited) Takashi Suemasu
    " Present status of BaSi₂ solar cells and hydrogen passivation of defects for improved photoresponsivity, "
    STAC-12, Online, July 6, 2021.
77. (invited) Kaoru Toko
    " Low-temperature solid-phase crystallization of group IV material thin films, "
    AM-FPD21, Online, July 1, 2021.
78. (invited) Toshifumi Imajo, Takashi Suemasu, and Kaoru Toko,
    " Possibility of Ge-based materials for flexible thin-film transistors, "
    E-MRS Spring Meeting, O.YIF.26, Online, June, 1, 2021.
79. (invited) Takeshi Nishida, Takashi Suemasu, and Kaoru Toko,
    " Potential of polycrystalline GaAs thin films for wearable solar cells, "
    E-MRS Spring Meeting, O.YIF.27, Online, June, 1, 2021.
80. (Oral) Taro Komori, Haruka Mitarai, Kaoru Toko, and Takashi Suemasu,
    " Magneto-transport properties in Mn4-xNixN films with large current induced domain wall mobility and investigation in thier large anomalous Hall effect, "
    IEEE Intermag 2021, IF-02, Online, April 26-30, 2021.
81. (Oral) Haruka Mitarai, Taro Komori, Taku Hirose, Keita Ito, Kaoru Toko, Laurent Villa, Jean-philippe Attane, Kenta Amemiya, and Takashi Suemasu,
    " Two magnetic compensation compositions in Mn4-xCoxN epitaxial films at room temperature proved by X-ray magnetic circular dichroism, "
    IEEE Intermag 2021, DG-07, Online, April 26-30, 2021.
82. (Oral) Takeshi Nishida, Takashi Suemasu, and Kaoru Toko,
    " Layer exchange technique of Ge for high-efficiency solar cells on glass, "
    The 8th Asian Conference on Crystal Growth and Crystal Technology (CGCT-8), C-02-03-14, Online, Mar 1, 2021.
83. (invited) Kaoru Toko
    " Group IV semiconductor thin films on insulators: polycrystallization and device applications, "
    The 8th Asian Conference on Crystal Growth and Crystal Technology (CGCT-8), Online, Mar 1, 2021.

FY 2020

84. (Oral) Yudai Yamashita, Kaoru Toko, and Takashi Suemasu,
    " First Operation of n+-AZO/p-BaSi2 Thin Film Solar Cells, "
    The 30th International Photovoltaic Science and Engineering Conference (PVSEC-30), OP-T6-693, Online, Nov. 10, 2020.
85. (Oral) Sho Aonuki, Kaoru Toko, and Takashi Suemasu,
    " Remarkable improvement of the optical properties of As-doped n-BaSi2 films, "
    The 30th International Photovoltaic Science and Engineering Conference (PVSEC-30), OP-T6-693, Online, Nov. 10, 2020.
86. (Oral) Taira Nemoto, Ryota Koitabashi, Masami Mesuda, Kaoru Toko, and Takashi Suemasu,
    " Highest photoresponsivity ever achieved for undoped BaSi2 films by RF sputtering, "
    The 30th International Photovoltaic Science and Engineering Conference (PVSEC-30), OP-T6-599, Online, Nov. 10, 2020.
87. (Poster) Ryota Koitabashi, Taira Nemoto, Masami Mesuda, Kaoru Toko, and Takashi Suemasu,
    " Formation of the high photoresponse BaSi2 films sputtered on glass substrates, "
    The 30th International Photovoltaic Science and Engineering Conference (PVSEC-30), P2-T6-2, Online, Nov. 10, 2020.
88. (invited) Kaoru Toko
    " Polycrystalline Ge-based thin films with high carrier mobility, "
    The Electrochemical Society Meeting PRiME 2020, Honolulu, Hawaii, Oct. 4-9, 2020.
89. (Oral) Toshifumi Imajo, Kenta Moto, Keisuke Yamamoto, Takashi Suemasu, Hiroshi Nakashima, and Kaoru Toko,
    " Underlayer Selection to Improve the Performance of Polycrystalline Ge Thin Film, "
    ECS-Prime2020, G03-1759, Online, Oct. 8, 2020.
90. (Oral) Yudai Yamashita, Rudi Santbergen, Carlos Mario Ruiz Tobon, Olindo Isabella, and Takashi Suemasu,
    " 3D device simulation and first demonstration of BaSi2 thin film solar cells, "
    PRiME 2020, H02-1877, Online, Oct. 7, 2020.
91. (Oral) T. Nishida, T. Suemasu, and K. Toko,
    " High optical performance of pseudo-single-crystal semiconductors formed on glass using layer-exchanged Ge seed layer, "
    ECS PRiME, Z01-3609, Online, Oct. 6, 2020.
92. (Oral) Masaya Saito, Takeshi Nishida, Takashi Suemasu, and Kaoru Toko,
    " Impact of the Precursor Conditions on the Solid-phase Crystallization of Amorphous GaAs Thin Films on Glass and Plastic Substrates, "
    2020 International Conference on Solid State Devices and Materials (SSDM 2020), K-5-02, Online, Sept. 29, 2020.
93. (Oral) T. Nishida, T. Suemasu, and K. Toko,
    " Seed Layer Technique Leading to High-photoresponsivity GaAs Films on Glass, "
    2020 International Conference on Solid State Devices and Materials (SSDM 2020), J-4-05, Online, Sept. 29, 2020.
94. (Oral) Hiromasa Murata, Takashi Suemasu, and Kaoru Toko,
    " Ni-Induced Layer Exchange of Multilayer Graphene on Plastic Substrate for Flexible Rechargeable Battery Anode, "
    2020 International Conference on Solid State Devices and Materials (SSDM 2020), J-2-05, Online, Sept. 28, 2020.
95. (Oral) Toshifumi Imajo, Takashi Suemasu, and Kaoru Toko,
    " High Hole-mobility (690 cm2 V-1 s-1) Flexible Polycrystalline Ge Thin Films, "
    2020 International Conference on Solid State Devices and Materials (SSDM 2020), K-2-01, Online, Sept. 28, 2020.
96. (Oral) Mikie Tsuji, Takashi Suemasu, and Kaoru Toko,
    " Thin-Film Thermoelectric Generators with Si1-xGex Formed by Layer Exchange, "
    2020 International Conference on Solid State Devices and Materials (SSDM 2020), F-2-01, Online, Sept. 28, 2020.
97. (Oral) Takuto Mizoguchi, Toshifumi Imajo, Takashi Suemasu, and Kaoru Toko,
    " Effects of Post Deposition Annealing on the Solid-Phase Crystallization of Ge leading to a Hole Mobility of 530 cm2/Vs on Glass, "
    2020 International Conference on Solid State Devices and Materials (SSDM 2020), K-2-02, Online, Sept. 28, 2020.
98. (Oral) Tomoki Ozawa, Kinta Kusano, Takashi Suemasu, and Kaoru Toko,
    " Thickening of Al-induced Layer-exchanged Si1-xGex Film for Improving Thermoelectric Output Power, "
    2020 International Conference on Solid State Devices and Materials (SSDM 2020), F-2-02, Online, Sept. 28, 2020.
99. (Poster) Yudai Yamashita, Rudi Santbergen, Carlos Mario Ruiz Tobon, Miro Zeman, Olindo Isabella, and Takashi Suemasu,
    " Optical 3D device simulation of BaSi2 thin film solar cells, "
    37th European PV Solar Energy Conference and Exhibition (37th EU-PVSEC), 1BV.4.46, Online, Sept. 8, 2020.
100. (Poster) Zhihao Xu, Takuma Sato, Jumpei Nakamura, Akihiro Koda, Koichiro Shimomura, and Takashi Suemasu,
     " Hydrogen states in BaSi2 by muon spin rotation, "
     37th European PV Solar Energy Conference and Exhibition (37th EU-PVSEC), 1BV.4.1, Online, Sept. 8, 2020.
101. (Poster) Yudai Yamashita, Kaoru Toko, and Takashi Suemasu,
     " First demonstration of n+-AZO/p-BaSi2 thin film solar cells, "
     Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials (ASCO-NANOMAT 2020), III30.11p, Vladivostok, Russia, July 30, 2020.
102. (Oral) S. Aonuki, Y. Yamashita, T. Sato, Z. Xu, K. Toko, and T. Suemasu,
     " Atomic hydrogen passivation for marked photoresponsivity improvement of As-doped n-BaSi2 films, "
     62th Electric Materials Conference, DD01, Ohio, USA, June 26 (2020).
103. (invited) T, Imajo, T. Suemasu and K. Toko,
     " The highest quality flexible polycrystalline Ge thin film for wearable devices, "
     E-MRS Spring Meeting, R.YIF.19, Strasbourg, France, May, 26, 2020.（Postponed due to COVID-19）
104. (Poster) T, Imajo, T. Suemasu and K. Toko,
     " Direct synthesis of Ge thin film on plastic substrate by solid-phase crystallization, "
     E-MRS Spring Meeting, R.P.2, Strasbourg, France, May, 26, 2020. （Postponed due to COVID-19）

FY 2019

105. (Poster) Takashi Suemasu, Zhihao Xu, Takuma Sato, Jumpei Nakamura, Akiho Koda, and Koichiro Shimomura,
     " Investigation of hydrogen states in semiconducting BaSi2 by muon spin rotation, "
     Materials Research Meeting 2019, E3-13-p02, Yokohama, Japan, Dec. 13, 2019.
106. (invited) Kaoru Toko
     " Potential of group IV semiconductors for flexible thermoelectric devices
     Materials Research Meeting 2019, Yokohama, Japan, Dec. 9, 2019.
107. (Oral) Y. Yamashita, T. Sato, K. Toko and T. Suemasu,
     " Molecular beam epitaxy of BaSi2 light absorbers with smooth BaSi2/Si interface using three-step growth method, "
     29th International Photovoltaic Science and Engineering Conference, 4WeO3-2, Xian, China, Nov. 6th, 2019.
108. (invited) Hiromasa Murata, Takashi Suemasu, and Kaoru Toko,
     " Multilayer graphene: Layer-exchange synthesis of multilayer graphene for flexible carbon electronics, "
     2019 European Materials Research Society (E-MRS) Fall Meeting, V.3.3, Warsaw, Poland, Sept. 18, 2019.
109. (Poster) Takeshi Nishida, Takashi Suemasu, and Kaoru Toko,
     " Al-induced layer exchange of Ge for seed layer applications, "
     2019 European Materials Research Society (E-MRS) Fall Meeting, V.PYSF.11, Warsaw, Poland, Sept. 17, 2019.
110. (invited) Takeshi Nishida, Takashi Suemasu, and Kaoru Toko,
     " Low-temperature synthesis of GaAs films on insulators for wearable solar cells, "
     2019 European Materials Research Society (E-MRS) Fall Meeting, V.YSF.25, Warsaw, Poland, Sept. 17, 2019.
111. (invited) Hiromasa Murata, Takashi Suemasu, and Kaoru Toko,
     " High-quality multilayer graphene formed by thickness-controlled metal-induced layer exchange, "
     2019 European Materials Research Society (E-MRS) Fall Meeting, V.YSF.19, Warsaw, Poland, Sept. 17, 2019.
112. (Oral) Toshifumi Imajo, Takashi Suemasu, and Kaoru Toko
     " Thickness dependent crystal and electrical properties of polycrystalline Ge on a plastic substrate formed by solid-phase crystallization, "
     2019 International Conference on Solid State Devices and Materials (SSDM 2019), F-6-01, Nagoya, Japan, Sept. 5, 2019.
113. (Oral) Hiromasa Murata, Yoshiki Nakajima, Takashi Suemasu, and Kaoru Toko
     " Comprehensive study of metal-induced layer-exchange for high-quality multilayer graphene, "
     2019 International Conference on Solid State Devices and Materials (SSDM 2019), G-6-04, Nagoya, Japan, Sept. 5, 2019.
114. (Oral) Kenta Moto, Keisuke Yamamoto, Takashi Suemasu, Hiroshi Nakashima, and Kaoru Toko
     " Electrical Properties of p-Channel Thin-Film Transistors Fabricated on High-Mobility Polycrystalline Ge on Glass, "
     2019 International Conference on Solid State Devices and Materials (SSDM 2019), N-2-05, Nagoya, Japan, Sept. 3, 2019.
115. (Oral) Mikie Tsuji, Kinta Kusano, Takashi Suemasu, and Kaoru Toko
     " Thermoelectric p-type Ge Films Formed by Zn-induced Layer Exchange at 80 ℃, "
     2019 International Conference on Solid State Devices and Materials (SSDM 2019), C-1-04, Nagoya, Japan, Sept. 3, 2019.
116. (Oral) Masaya Saito, Kenta Moto, Takeshi Nishida, Takashi Suemasu, and Kaoru Toko
     " Impact of As Doping in Amorphous Ge on Solid-Phase Crystallization, "
     2019 International Conference on Solid State Devices and Materials (SSDM 2019), G-2-05, Nagoya, Japan, Sept. 3, 2019.
117. (Oral) T. Imajo, K. Moto, T. Suemasu, and K. Toko
     " Large-grained Polycrystalline Germanium Thin Films on Insulators with the Highest Hole Mobility "
     The 5th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, Tue-a-O32, Miyazaki, Japan, July 23, 2019.
118. (Oral) T. Nishida, K. Moto, T. Suemasu, and K. Toko
     " Photoresponsivity of a Pseudo-single-crystal GaAs Film Synthesized on Glass Using a Large-grained Ge Seed Layer for Solar Cell Applications "
     The 5th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, Tue-a-O31, Miyazaki, Japan, July 23, 2019.
119. (Oral) M. Saito, K. Moto, T. Nishida, T. Suemasu, and K. Toko
     " Solid-phase Crystallization of As-doped Amorphous Ge on Insulator Leading to the Highest Electron Mobility "
     The 5th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, Tue-a-O28, Miyazaki, Japan, July 23, 2019.
120. (Oral) H. Murata, Y. Nakajima, T. Suemasu, and K. Toko
     " Improving Crystal and Electrical Properties of Multilayer Graphene on Insulator formed by Ni-Induced Layer Exchange "
     The 5th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, Mon-a-O22, Miyazaki, Japan, July 22, 2019.
121. (Oral) M. Tsuji, K. Kusano, T. Suemasu, and K. Toko
     " High Thermoelectric Performance of Flexible p-type SiGe Films Formed by High Impurity Doping Technique "
     The 5th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, Sun-a-O15, Miyazaki, Japan, July 21, 2019.
122. (Oral) S. Aonuki, Y. Yamashita, K. Toko and T. Suemasu
     " Fabrication of As-doped n-type BaSi2 Films Grown by Molecular Beam Epitaxy "
     The 5th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, Sun-a-O12, Miyazaki, Japan, July 21, 2019.
123. (Oral) Y. Yamashita, T. Sato, K. Toko, and T. Suemasu
     " Molecular Beam Epitaxy of High-quality Undoped BaSi2 Light Absorbers using Threestep Growth Method "
     The 5th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, Sun-a-O11, Miyazaki, Japan, July 21, 2019.
124. (Oral) L. Benincasa, H. Hoshida, T. Deng, T. Sato, Z. Xu, K. Toko, Y. Terai, and T. Suemasu
     " Investigation of defect levels in undoped-BaSi2 epitaxial films and the effect of atomic hydrogen passivation by photoluminescence measurement "
     The 5th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, Sun-a-O8, Miyazaki, Japan, July 21, 2019.
125. (Oral) Z. Xu, K. Gotoh, T. Deng, K. Toko, N. Usami, D. Migas, and T. Suemasu
     " Significant improvement on photoresponsivity and minority carrier lifetime of atomic H passivated BaSi2 epitaxial films "
     The 5th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, Sun-a-O6, Miyazaki, Japan, July 21, 2019.
126. (Oral) T. Sato, Y. Yamashita, Z. Xu, L. Benincasa, K. Toko, S. Gambarelli, and T. Suemasu
     " Electron paramagnetic resonance spectra of BaSi2 epitaxial films and bulk samples "
     The 5th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, Sun-a-O5, Miyazaki, Japan, July 21, 2019.
127. (Poster) Y. Nakajima, H. Murata, T. Suemasu, and K. Toko
     " Transfer Free Synthesis of Multilayer Graphene on Insulator: Comprehensive Study of Carbon/metal Solid-phase Reaction "
     The 5th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, P24, Miyazaki, Japan, July 20, 2019.
128. (Poster) S. Sugiyama, Y. Kimura, Y. Yamashita, K. Toko, N. Usami, and T. Suemasu
     " Influence of Ba to Si rate ratio on the properties of B-doped BaSi2 epitaxial films "
     The 5th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, P5, Miyazaki, Japan, July 20, 2019.
129. (Poster) R. Sugiyama, K. Toko, and T. Suemasu
     " Effect of BaSi2 template fabrication methods on the performance of p-BaSi2/n-Si heterojunction solar cells "
     The 5th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, P2, Miyazaki, Japan, July 20, 2019.
130. (Poster) T. Nemoto, S. Matsuno, M.Mesuda,H. Kuramochi, K. Toko, and T. Suemasu
     " Drastic enhancement of photoresponsivity in C-doped BaSi2 films formed by radio-frequency sputtering "
     The 5th Asia-Pacific Conference on Semiconducting Silicides and Related Materials, P1, Miyazaki, Japan, July 20, 2019.
131. (Poster) Y. Yamashita, K. Kodama, K. Toko, and T. Suemasu
     " Marked Improvement of the photoresponsivity of BaSi2 light absorbers by increasing growth temperature and three-step growth method. "
     46th IEEE Photovoltaic Specialists Conference (PVSC-46), C11, Chicago, U.S.A, June 19, 2019.
132. (Oral) Z. Xu, K. Gotoh, T. Deng, K. Toko, N. Usami, and T. Suemasu,
     " Significant improvement of optical properties of BaSi2 due to atomic H passivation by radio-frequency plasma. "
     46th IEEE Photovoltaic Specialists Conference (PVSC-46), Area 1.4, Chicago, U.S.A, June 17, 2019.
133. (Oral) Y. Yamashita, K. Toko and T. Suemasu,
     " Epitaxial growth of BaSi2 light absorbers by molecular beam epitaxy and significant photoresponsivity enhancement by increased growth temperatures "
     Compound Semiconductor Week 2019, TuB3-8, Nara, Japan, May 21, 2019.
134. (Oral) T. Nishida, K. Moto, T. Suemasu, and K. Toko
     " Structural and optical properties of GaAs film grown on a glass substrate using a large-grained Ge seed layer for solar cell applications "
     Compound Semiconductor Week 2019, TuB3-5, Nara, Japan, May 21, 2019.
135. Y. Nakajima, H. Murata, T. Suemasu, and K. Toko
     " Expansion of Solid-phase Interactions between Carbon and Metals: Layer Exchange for Multilayer Graphene on Insulator "
     Compound Semiconductor Week 2019, TuC1-8, Nara, Japan, May 21, 2019.
136. (invited) T. Suemasu,
     " Semiconducting BaSi2 solar cells and ultrafast current-induced domain wall motion in Mn4N, "
     4th Int. Conf. Energy Materials and Nanostructures, I17, Wuhan, China, May 5, 2019.
137. Z. Xu, K. Gotoh, T. Deng, K. Toko, N. Usami, D. B. Migas, and T. Suemasu
     " Significant photoresponsivity improvement of BaSi2 films by using atomic hydrogen passivation "
     4th Int. Conf. Energy Materials and Nanostructures, KI38, Wuhan, China, May 5, 2019.
138. (invited) K. Toko and T. Suemasu,
     " Low-temperature synthesis of group IV semiconductors on insulators, "
     MRS Spring Meeting, EP10, Phoenix, USA, April 25, 2019.
139. (invited) T. Suemasu,
     " Rare-earth free Si-based new materials for high-efficiency solar cells, "
     3rd Southeast Asia Collaborative Symposium on Energy Materials, Kuala Lumpur, Malaysia, April 22, 2019.
140. Y. Yamashita, T. Sato, K. Toko, and T. Suemasu
     " Characterization of Defect Levels in BaSi2 by DLTS and Significant Improvement of Photoresponsivity by Increasing Growth Temperature "
     MRS Spring Meeting and exhibit ES20.07.18, Phoenix, USA, April 24, 2019.
141. (Oral)T. Imajo, K. Moto, T. Suemasu and K. Toko
     " High-hole mobility (500 cm2/Vs) polycrystalline Ge thin film on a GeO2 coated flexible plastic substrate "
     MRS Spring Meeting, EP10,02,03 Phoenix, USA, April 24, 2019.

FY 2018

142. (Oral) Ana B. Montes, Yilei Tian, Daan Schopmeijer, Stephan Eijt, Hendrik Schut, Takashi Suemasu, Noritaka Usami, Joao Serra, Olindo Isabella and Miro Zeman,
     " Annealing Effects on the Layer Structure in BaSi₂ Thin Films Studied by DB-PAS, "
     2018 MRS Fall Meeting, ET02.03.05, Boston, USA, Nov. 26, 2018.
143. (invited) Takashi Suemasu,
     " Significant impact of Ba to Si deposition rate ratios during molecular beam epitaxy on electrical and optical properties of BaSi₂ absorber layers, "
     The Forum on the Science and Techonology of Silicon Materials, Okayama, Japan, November 21, 2018.
144. (invited) Takashi Suemasu,
     " Present status and future prospect of BaSi₂ solar cells, "
     4th International Asian School Conference on Physics and Technology of Nanostructured Materials (ASCO-NANOMAT), Vladivostok, Russia, Sept. 24, 2018.
145. (Oral) T. Deng, T. Sato, Z. Xu, R. Takabe, S. Yachi, Y. Yamashita, K. Toko and T. Suemasu,
     " Towards BaSi2 homojunction solar cells on Si(001), "
     4th International Asian School Conference on Physics and Technology of Nanostructured Materials (ASCO-NANOMAT), III.24.01o, Vladivostok, Russia, Sept. 24, 2018
146. (Poster) Takeshi Nishida, Mitsuku Nakata, Kaoru Toko,
     " Pseudo-single-crystal Ge on glass with a long minority carrier lifetime comparable to bulk-Ge solar cells, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2018, IWP059, Tsukuba, Sept. 21, 2018.
147. (Poster) Yoshiki Nakajima, Hiromasa Murata, Kaoru Toko,
     " Transfer Free Synthesis of Multilayer Graphene on Insulator by Layer Exchange Growth with Transition Metals, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2018, IWP058, Tsukuba, Sept. 21, 2018.
148. (Poster) Daichi Takahara, Kaoru Toko,
     " The Highest Hole Mobility SiGe on Insulating Substrate, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2018, IWP057, Tsukuba, Sept. 21, 2018.
149. (Poster) Shu Sugiyama, Takashi Suemasu,
     " The relation between Ba/Si deposition rate ratio and the electrical properties of B-doped BaSi2 epitaxial films, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2018, IWP050, Tsukuba, Sept. 21, 2018.
150. (Poster) Ryota Sugiyama, Ryota Takabe, Takashi suemasu,
     " Influence of deposition temperature during ITO sputtering on BaSi2 solar cell properties, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2018, IWP049, Tsukuba, Sept. 21, 2018.
151. (Poster) T. Komori, T. Gushi, A. Anzai, S. Isogami and T. Suemasu,
     " Significant modification of magneto-transport properties of Mn4N thin films by Ni substituion, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2018, IWP048, Tsukuba, Sept. 21, 2018.
152. (Poster) Akihito Anzai, Toshiki Gushi, Taro Komori, Takashi Suemasu,
     " Growth of high quality Mn4N magnetic films on SrTiO3 subsutate, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2018, IWP047, Tsukuba, Sept. 21, 2018.
153. (Poster) Komomo Kodama, Tianguo Deng, and Takashi Suemasu,
     " First operation of BaSi2 pn homojunction solar cells by structure optimization, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2018, IWP046, Tsukuba, Sept. 21, 2018.
154. (Poster) Satoshi Matsuno, Masami Mesuda, Hidehito Kuramochi, Takashi Suemasu,
     " Intense photoresponsivity of BaSi2 films with changing Ba-to-Si atomic ratios by sputtering, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2018, IWP045, Tsukuba, Sept. 21, 2018.
155. (Poster) Zhihao Xu, Tianguo Deng, Kaoru Toko, Takashi Suemasu,
     " Optimal growth condition of hydrogenated amorphous silicon on BaSi2 epitaxial film, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2018, IWP044, Tsukuba, Sept. 21, 2018.
156. (Poster) Yudai Yamashita, Takuma Sato, Ryota Takabe, Takashi Suemasu,
     " Formation of lowest defect density BaSi2 light absorbers for high efficiency homojunction solar cell applications, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2018, IWP043, Tsukuba, Sept. 21, 2018.
157. (Poster) Komomo Kodama, Tianguo Deng, Takashi Suemasu,
     " First demonstration of BaSi2 pn homojunction solar cells by structure optimization, "
     Student Poster Presentation on Materials Research (NIMS Collaborative Doctoral Program & TIMS), PS25, Tsukuba, Sept. 20, 2018.
158. (Poster) Takeshi Nishida, Takashi Suemasu, Kaoru Toko,
     " Direct synthesis of a high-quality Ge layer on glass for solar-cell applications, "
     Student Poster Presentation on Materials Research (NIMS Collaborative Doctoral Program & TIMS), PS16, Tsukuba, Sept. 20, 2018.
159. (Poster) Yoshiki Nakajima, Hiromasa Murata, Takashi Suemasu, Kaoru Toko,
     " What Kind of Metal Induce the Layer Exchange Growth of Multilayer Graphene?, "
     Student Poster Presentation on Materials Research (NIMS Collaborative Doctoral Program & TIMS), PS15, Tsukuba, Sept. 20, 2018.
160. (Poster) Daichi Takahara, Kaoru Toko,
     " Large-Grained SiGe on Insulator for Thin Film Solar Cells, "
     Student Poster Presentation on Materials Research (NIMS Collaborative Doctoral Program & TIMS), PS14, Tsukuba, Sept. 20, 2018.
161. (Poster) Toshifumi Imajo, Kenta Moto, Ryota Yoshimine, Kaoru Toko,
     " Flexible Germanium Thin Film with the Highest Hole Mobility, "
     Student Poster Presentation on Materials Research (NIMS Collaborative Doctoral Program & TIMS), PS13, Tsukuba, Sept. 20, 2018.
162. (Oral) Kenta Moto, Takashi Suemasu, Kaoru Toko,
     " Solid-phase crystallization of amorphous GeSn on glass leading to high-hole mobility, "
     2018 European Materials Research Society (E-MRS) Fall Meeting, U.10.3, Warsaw, Poland, Sept. 19, 2018.
163. (Poster) Hiromasa Murata, Yoshiki Nakajima, Takashi Suemasu, Kaoru Toko,
     " Guidelines for metal selection to induce layer exchange growth of multilayer graphene, "
     2018 European Materials Research Society (E-MRS) Fall Meeting, E.PYSF.18, Warsaw, Poland, Sept. 18, 2018.
164. (invited) Hiromasa Murata, Takashi Suemasu, Kaoru Toko,
     " Low-temperature synthesis of multilayer graphene on glass by Ni-induced layer exchange, "
     2018 European Materials Research Society (E-MRS) Fall Meeting, E.YSF.22, Warsaw, Poland, Sept. 18, 2018.
165. (Poster) Satoshi Matsuno, Ryota Takabe, Seiya Yokoyama, Kaoru Toko, Masami Mesuda, Hidehito Kuramochi, Takashi Suemasu,
     " Significant improvement of photoresponsivity of polycrystalline BaSi2 films directly formed on heated Si(111) substrates by sputtering, "
     2018 International Conference on Solid State Devices and Materials (SSDM 2018), PS-6-17, Tokyo, Japan, Sept. 13, 2018.
166. (Poster) Zhihao Xu, Kazuhiro Gotoh, Tianguo Deng, Kaoru Toko, Noritaka Usami, Takashi Suemasu,
     " Improvement of photoresponsivity of passivated BaSi2 thin film layers by hydrogenated amorphous Si using radio-frequency of H2 plasma, "
     2018 International Conference on Solid State Devices and Materials (SSDM 2018), PS-6-14, Tokyo, Japan, Sept. 13, 2018.
167. (Oral) Takeshi Nishida, Takashi Suemasu, Kaoru Toko,
     " Epitaxial Thickening of a Large-grained Ge Layer on Glass for Solar Cell Applications, "
     2018 International Conference on Solid State Devices and Materials (SSDM 2018), N-8-03, Tokyo, Japan, Sept. 13, 2018.
168. (Oral) Daichi Takahara, Takashi Suemasu, Kaoru Toko,
     " Electrical properties of large-grained SiGe on an insulator formed by advanced solid-phase crystallization "
     2018 International Conference on Solid State Devices and Materials (SSDM 2018), N-8-02, Tokyo, Japan, Sept. 13, 2018.
169. (Oral) Kinta Kusano, Atsushi Yamamoto, Takashi Suemasu, Kaoru Toko,
     " Flexible thermoelectric SiGe films formed by Al-induced layer exchange, "
     2018 International Conference on Solid State Devices and Materials (SSDM 2018), F-8-06, Tokyo, Japan, Sept. 13, 2018.
170. (Oral) T. Deng, Z. Xu, Y. Yamashita, K. Kodama, T. Sato, K. Toko and T. Suemasu,
     " Investigation of BaSi2 homojunction solar cells on a p+-BaSi2/p+-Si tunnel junction towards BaSi2/Si tandem solar cells "
     2018 International Conference on Solid State Devices and Materials (SSDM 2018), F-5-03, Tokyo, Japan, Sept. 12, 2018.
171. (Oral) Komomo Kodama, Kaoru Toko, and Takashi Suemasu,
     " First demonstration of BaSi2 pn homojunction solar cell, "
     2018 International Conference on Solid State Devices and Materials (SSDM 2018), F-5-02, Tokyo, Japan, Sept. 12, 2018.
172. (Oral) Yudai Yamashita, Takuma Sato, Kaoru Toko, Takashi Suemasu,
     " Deep level transient spectroscopy characterization of undoped BaSi2 light absorbers, "
     2018 International Conference on Solid State Devices and Materials (SSDM 2018), E-4-04, Tokyo, Japan, Sept. 12, 2018.
173. (Oral) Toshifumi Imajo, Ryota Yoshimine, Kenta Moto, Takashi Suemasu, Kaoru Toko,
     " Improving hole mobility of solid-phase crystallized Ge on glass by reduction of carrier scattering factors, "
     2018 International Conference on Solid State Devices and Materials (SSDM 2018), N-1-04, Tokyo, Japan, Sept. 11, 2018.
174. (Oral) Yoshiki Nakajima, Hiromasa Murata, Takashi Suemasu, Kaoru Toko,
     " Metal-induced Layer Exchange for Multilayer Graphene on Insulator: Effects of Metal Species, "
     2018 International Conference on Solid State Devices and Materials (SSDM 2018), N-1-02, Tokyo, Japan, Sept. 11, 2018.
175. (Poster) T. Gushi, M. Klug, L. Vila, J. Ph. Attane, F. Takata, A. Anzai, T. Suemasu and S. Pizzini
     " Large STT-driven domain wall velocities in perpendicularly magnetized Mn₄N ferrimagnetic thin films "
     The 9th Joint European Magnetic Symposia Conference 2018, P-C. 108, Mainz, Germany, Sept. 6 (2018).
176. (Oral) K. Ito, M. Mizuguchi, F. Takata, T. Suemasu, H. Yanagihara, K. Takanashi
     " Growth of FeNiN Films toward Formation of L10-ordered FeNi Films by Nitrogen Topotactic Extraction "
     21st International Conference on Magnetism, V5-01, San Francisco, USA, July 20, 2018.
177. (Oral) K. Kodama, R. Takabe, K. Toko, and T. Suemasu
     " First operation of BaSi2 p-n homojunction solar cells "
     60th Electric Materials Conference, JJ01, California, USA, June 28 (2018).
178. (Oral) Y. Yamashita, T. Sato, K. Toko, and T. Suemasu
     " Formation of low defect density BaSi2 light absorbers for solar cell applications "
     60th Electric Materials Conference, O10, California, USA, June 27 (2018).
179. (Oral) T. Imajo, K. Toko, R. Takabe, and T. Suemasu
     " Characterization of crystallinity and electrical properties of SrGe₂ thin films on Ge substrates grown by two-step epitaxy "
     60th Electric Materials Conference, F06, California, USA, June 27 (2018).
180. (Oral) T. Nishida, T. Suemasu, and K. Toko
     " Epitaxial growth of a light absorbing Ge layer on an Al-induced crystallized Ge seed layer "
     60th Electric Materials Conference, F05, California, USA, June 27 (2018).
181. (Oral) Y. Yamashita, K. Toko, and T. Suemasu
     " Deep level transient spectroscopy characterization of BaSi2 light absorbers "
     7th World Conference on Photovoltaic Energy Conversion, Area 1.1, Hawaii, USA, June 15 (2018).
182. (Poster) Z. Xu, K. Gotoh, T. Deng, K. Toko, U. Usami and T. Suemasu
     " Photoresponsivity improvement of BaSi2 epitaxial films by capping with hydrogenated amorphous Si layers by radio-frequency H2 plasma "
     7th World Conference on Photovoltaic Energy Conversion, C2-577, Hawaii, USA, June 13 (2018).
183. (Poster) K. Kodama, R. Takabe, K. Toko, and T. Suemasu " Demonstration of BaSi2 pn homojunction solar cells and improvement of photoresponsivity of BaSi2 absorbers by Ba/Si deposition rate ratio "
     7th World Conference on Photovoltaic Energy Conversion, B8-583, Hawaii, USA, June 13 (2018).
184. (Poster) T. Deng, T. Sato, Z. Xu, R. Takabe, S. Yachi, Y. Yamashita, K. Toko and T. Suemasu
     " Investigation of p-BaSi2/n-Si heterojunction solar cells on Si(001) and comparison to those on Si(111) "
     7th World Conference on Photovoltaic Energy Conversion, A7-572, Hawaii, USA, June 13 (2018).
185. (Oral) T. Gushi, L. Vila, J. P. Attane, O. Fruchart, A. Marty, S. Pizzini, F. Takata, A. Anzai and T. Suemasu,
     " Domain wall properties and spin transfer torque in perpendicularly magnetized Mn₄N ferrimagnet thin films, "
     Intermag 2018, Singapore, April 15, 2018.
186. (invited) Takashi Suemasu,
     " Recent achievements towards high-efficiency BaSi2 homojunction solar cells, "
     10th International WorkShop on Crystalline Siliciond for Solar Cells (CSSC-10), 7-2, Sendai, Japan, April 11, 2018.

FY 2017

187. (poster) D. Takahara, R. Yoshimine, T. Suemasu, and K. Toko,
     " Fabrication of high-carrier mobility polycrystalline SiGe thin film on insulator, "
     2018 Joint Symposium on Energy Materials Science and Technology, P-38, Tsukuba, Japan, March 9, 2018.
188. (poster) T. Nishida, M. Nakata, T. Suemasu, and K. Toko,
     " Fabrication of large-grained Ge layer on glass by Al-induced layer exchange for solar cell application, "
     2018 Joint Symposium on Energy Materials Science and Technology, P-37, Tsukuba, Japan, March 8, 2018.
189. (poster) Y. Nakajima, H. Murata, T. Suemasu, and K. Toko,
     " Effects of catalyst metal species in the layer exchange growth of multilayyer graphene, "
     2018 Joint Symposium on Energy Materials Science and Technology, P-36, Tsukuba, Japan, March 9, 2018.
190. (poster) K. Kusano, A. Yamamoto, T. Suemasu, and K. Toko,
     " Direct synthesis of thermoelectric SiGe thin films on plastic substrates by Al-induced layer exchange, "
     2018 Joint Symposium on Energy Materials Science and Technology, P-35, Tsukuba, Japan, March 8, 2018.
191. (poster) T. Imajo, R. Yoshimine, K. Moto, T. Suemasu, and K. Toko,
     " Improvement of hole mobility of polycrystalline Ge on glass by controlling interfacial layer in solid-phase crystallization, "
     2018 Joint Symposium on Energy Materials Science and Technology, P-34, Tsukuba, Japan, March 9, 2018.
192. (poster) Daichi Takahara, Ryota Yoshimine, Takashi Suemasu, and Kaoru Toko,
     " Composition-dependent electrical properties of solid-phase crystallized SiGe thin film on insulator, "
     11th International WorkShop on New Group IV Semiconductor Nanoelectronics, P-03, Sendai, Japan, February 24, 2018.
193. (poster) Ryota Yoshimine, Kenta Moto, Takashi Suemasu, Kaoru Toko,
     " Reduction of carrier scattering factors in solid-phase crystallized Ge on an insulator leading to high hole mobility (450 cm^2/Vs), "
     11th International WorkShop on New Group IV Semiconductor Nanoelectronics, P-02, Sendai, Japan, February 24, 2018.
194. (poster) Kinta Kusano, Atsushi Yamamoto, Takashi Suemasu, Kaoru Toko,
     " Self-organization of thermoelectric Si1-xGex (0?x?1) thin films on insulators using Al-induced layer exchange, "
     11th International WorkShop on New Group IV Semiconductor Nanoelectronics, P-01, Sendai, Japan, February 24, 2018.
195. (poster) Daichi Takahara, Kaoru Toko, Ryota Yoshimine, Takashi Suemasu,
     " Solid-Phase Crystallization of Density-Controlled Amorphous Si1-xGex Thin Films on Glass, "
     27th International Photovoltaic Science and Engineering Conference, 2ThPo.93, Shiga, Japan, November 16, 2017.
196. (poster) Toshifumi Imajo, Kaoru Toko, Ryota Takabe and Takashi Suemasu,
     " Growth of SrGe2 thin films on Ge substrates, "
     27th International Photovoltaic Science and Engineering Conference, 2ThPo.83, Shiga, Japan, November 16, 2017.
197. (Oral) Komomo Kodama, Ryota Takabe, Kaoru Toko, Takashi Suemasu,
     " Effect of Sb-doped n+-BaSi2 surface layer on the carrier transport properties and spectral response, "
     27th International Photovoltaic Science and Engineering Conference, 2WeO4.2, Shiga, Japan, November 15, 2017.
198. (poster) Yudai Yamashita, Ryota Takabe, Kaoru Toko, and Takashi Suemasu,
     " Dependence of solar cell characteristics on Si substrate pretreatment, "
     27th International Photovoltaic Science and Engineering Conference, 2TuPo.105, Shiga, Japan, November 14, 2017.
199. (poster) Ryota Takabe, Tianguo Deng, K. Kodama, Y. Yamashita, Koaru Toko, and Takashi Suemasu,
     " Impact of Ba/Si flux ratio during molecular beam epitaxy growth on the characteristics of BaSi2 epitaxial films on Si(111), "
     27th International Photovoltaic Photovoltaic Science and Engineering Conference, 2TuPo.83, Shiga, Japan, November 14, 2017.
200. (poster) Zhihao Xu, Tianguo Deng, Ryota Takabe Du, Miftahullatif Emha Bayu, Kaoru Toko and Takashi Suemasu,
     " Nitrogen-doped BaSi2 thin film on n-Si (111) by molecular beam epitaxy and radio-frequency plasma generator, "
     27th International Photovoltaic Science and Engineering Conference, 2TuPo.78, Shiga, Japan, November 14, 2017.
201. (poster) Tianguo Deng, Kazuhiro Gotoh, Ryota Takabe, Zhihao Xu, Suguru Yachi, Yudai Yamashita, Kaoru Toko, Noritaka Usami, Takashi Suemasu,
     " Investigation on boron-doped p-BaSi2/n-Si hetero-junction solar cells on a textured Si(001) substrate, "
     27th International Photovoltaic Science and Engineering Conference, 2TuPo.75, Shiga, Japan, November 14, 2017.
202. (Poster) H. Murata, K. Toko, T. Suemasu
     " Effect of interlayers on the layer exchange growth of multilayer graphene on an insulator, "
     The 8th International Symposium on Surface Science (ISSS-8) 4PA-39, Tsukuba, October 24, 2017.
203. (Poster) Suguru Yachi, Ryota Takabe, Kaoru Toko, Takashi Suemasu
     " Achievement of the conversion efficiency of 9.9% in p-BaSi2/n-Si hetero solar cells, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2017 IWP008, Tsukuba, September 26, 2017.
204. (Poster) Fumiya Takata, Toshiki Gushi, Akihito Anzai, Kaoru Toko, and Takashi Suemasu
     " Fabrication of L10-MnAl films on lattice matched Mn4N buffer layer, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2017 IWP009, Tsukuba, September 26, 2017.
205. (Poster) Toshifumi Imajo, Ryota Takabe, Kaoru Toko, Takashi Suemasu
     " SrGe2 thin films for solar cell applications, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2017 IWP013, Tsukuba, September 26, 2017.
206. (Poster) K. Kusano, K. Toko, A. Yamamoto, T. Suemasu
     " Al-induced crystallization of thermoelectric SiGe film on insulator, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2017 IWP018, Tsukuba, September 26, 2017.
207. (Poster) Hiromasa Murata, Kaoru Toko, Takashi Suemasu
     " Low-temperature (500℃) synthesis of multilayer graphene on glass through metal-induced layer exchange, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2017 IWP019, Tsukuba, September 26, 2017.
208. (Poster) Akihito Anzai, Toshiki Gushi, Fumiya Takata, Kaoru Toko, Takashi Suemasu
     " Epitaxial growth and magnetic properties of MnxFe4-xN films on MgO(001) substrates, "
     Tsukuba Global Science Week Interdisciplinary Workshop on Science and Patents 2017 IWP021, Tsukuba, September 26, 2017.
209. (invited) T. Suemasu,
     " Semiconducting BaSi₂- Si-based new absorber-layer material for solar cells, "
     SSDM2017, M-3-01, Sendai, Japan, September 21, 2017.
210. (Oral) R. Yoshimine, K. Toko, and T. Suemasu
     " Grain Boundary Engineering of Solid-Phase Crystallized Ge on Glass by Controlling Atomic Density of Precursor, "
     SSDM2017, M-4-03, Sendai, Japan, September 21, 2017.
211. (Oral) D. Takahara, K. Toko, R. Yoshimine, T. Suemasu
     " Effects of Deposition Temperature of Amorphous Precursors on Solid-Phase Crystallized Si1?xGex Thin Films on an Insulator, "
     SSDM2017, M-4-04, Sendai, Japan, September 21, 2017.
212. (Poster) K. Moto, K. Toko, R. Yoshimine, T. Suemasu
     " High-hole mobility GeSn on glass formed by solid-phase crystallization using an atomic density controlled precursor, "
     SSDM2017, PS-1-06 (Late News), Sendai, Japan, September 21, 2017.
213. (Poster) T. Imajo, K. Toko, R. Takabe, T. Suemasu
     " Reactive Deposition Epitaxy of SrGe2 Thin Films on Ge(111) and (001) Substrates, "
     SSDM2017, PS-15-03, Sendai, Japan, September 21, 2017.

FY 2016

214. (invited) T. Suemasu and N. Usami,
     " Recent progress towards BaSi₂ solar cells, "
     Seventh International Symposium on Advanced Science and Technology of Silicon Materials (JSPS Si Symposium), Hawaii, USA, Nov. 21-25, 2016.
215. (Poster) H. Murata, K. Toko, and T. Suemasu,
     " Ni-induced Layer Exchange Crystallization of Sputtered Amorphous Carbon for Multi-layer Graphene on Insulator, "
     SSDM2016, PS-8-02, Tsukuba, Japan, September 28, 2016.
216. (Poster) F.Takata, K. Ito, K. Kabara, S. Higashikozono, T. Gushi, K. Toko, M. Tsunoda, and T. Suemasu,
     " Minority spin transport in epitaxially grown nickel-iron nitride films, "
     SSDM2016, PS-12-20, Tsukuba, Japan, September 28, 2016.
217. (Oral) R. Yoshimine, K. Toko, and T. Suemasu,
     " Low temperature (250^oC) crystallization of amorphous Ge thin film on insulator through Ag-induced layer exchange , "
     SSDM2016, D-5-02, Tsukuba, Japan, September 29, 2016.
218. (Poster) R. Takabe, S. Yachi, K. Toko, and T. Suemasu,
     " Recent progress of B-doped p-BaSi2/n-Si heterojunction solar cells,
     AEARU 6th Energy and Environmental Workshop (2016EEW-07), Yokohama, Japan, August 27, 2016.
219. (Poster) S. Higashikozono, K. Ito, F. Takata, T. Gushi, K. Toko, and T.Suemasu,
     " Highly oriented epitaxial (α''+α')-Fe₁₆N₂ films on α-Fe(001) buffered MgAl2O4(001) substrates and their magnetizations, "
     ICCGE-18, ThP-T05-13, Nagoya, Japan, August 11, 2016.
220. (Poster) M. Nakata, K. Toko, W. Jevasuwan, N. Fukata, and T. Suemasu,
     " Highly (111)-oriented Ge on insulators formed by Al-induced crystallization leading to vertically aligned Ge nanowires, "
     ICCGE-18, ThP-T02-1, Nagoya, Japan, August 11, 2016.
221. (Poster) N. Murakoso, H. Yamaguchi, M. Iinuma, T. Suemasu, and Y. Terai,
     " Lattice vibrational properties of BaSi₂ epitaxial film in polarized Raman spectra, "
     APAC-Silicide 2016, 17-P32, Fukuoka, Japan, July 17, 2016.
222. (Poster) Y. Li, Cham Thi Trinh, R. Takabe, K. Toko, N. Usami, and T. Suemasu,
     " Investigation of minority-carrier lifetime and solar cell properties of BaSi₂ formed on multicrystallline Si substrates, "
     APAC-Silicide 2016, 17-P20, Fukuoka, Japan, July 17, 2016.
223. (Poster) R. Yoshimine, K. Toko, and T. Suemasu,
     " Effect of interlayer on Ag-induced layer exchange crystallization of amorphous Ge thin film on insulator, "
     APAC-Silicide 2016, 17-P11, Fukuoka, Japan, July 17, 2016.
224. (Poster) H. Murata, K. Toko, and T. Suemasu,
     " Multi-layer graphene on insulator formed by Co-induced layer exchange, "
     APAC-Silicide 2016, 17-P10, Fukuoka, Japan, July 17, 2016.
225. (Poster) S. Yachi, R. Takabe, K. Toko, and T. Suemasu,
     " p-BaSi₂/n-Si solar cells with conversion efficiency approaching 10% by reduction of contact resistance and surface passivation using a-Si capping layers, "
     APAC-Silicide 2016, 17-P8, Fukuoka, Japan, July 17, 2016.
226. (Poster) E. Emha Bayu, H. Urai, D. Tsukahara, K. Toko, and T. Suemasu,
     " Enhancement of hole concentration in B-doped BaSi₂ epitaxial thin films by pulse laser annealing, "
     APAC-Silicide 2016, 17-P7, Fukuoka, Japan, July 17, 2016.
227. (Oral) R. Takabe, S. Yachi, D. Tsukahara, K. Toko, and T. Suemasu,
     " Fabrication of B-doped p-BaSi₂ on n-Ge(111) substrates for heterojunction solar cells, "
     APAC-Silicide 2016, 17-PM-V-3, Fukuoka, Japan, July 17, 2016.
228. (Oral) Cham Thi Trinh, Y. Nakagawa, K. O. Hara, R. Takabe, T. Suemasu, and N. Usami,
     " The growth of polycrystalline orthorhombic BaSi₂ on Ge substrate by vacuum evaporation method, "
     APAC-Silicide 2016, 17-PM-V-4, Fukuoka, Japan, July 17, 2016.
229. (Oral) Y. Nakagawa, Cham Thi Trinh, K. O. Hara, Y. Kurokawa, T. Suemasu, and N. Usami,
     " Proposal of a method to realize BaSi₂ thin films with uniform orientation using reactivity of excessive Ba in the film and Si substrate in vacuum evaporation, "
     APAC-Silicide 2016, 17-PM-V-5, Fukuoka, Japan, July 17, 2016.
230. (Oral) T. Suhara, K. Murata, A. Navabi, K. O. Hara, Y. Nakagawa, Cham Thi Trinh, Y. Kurokawa, T. Suemasu, Kang L. Wang, and N. Usami,
     " Post-annealing effects on BaSi₂ Evaporated films grown on Si substrates, "
     APAC-Silicide 2016, 17-PM-V-6, Fukuoka, Japan, July 17, 2016.
231. (invited) T. Suemasu,
     " Recent progress in BaSi₂ thin-film solar cells, "
     23rd Int Workshop on active-matrix flatpanel displays and deices, S3-2, Kyoto, Japan, July 7, 2016.
232. (Poster) R. Takabe, K. Toko, and T. Suemasu,
     " Photoresponse measurement of highly oriented BaSi₂ films on Ge(111) using solid phase epitaxy templates, "
     43rd International Symposium on Compound Semiconductors, MoP-ISCS-002, Toyama, Japan, June 27, 2016.
233. (Oral) S. Yachi, R. Takabe, D. Tsukahara, H. Takeuchi, K. Toko, and T. Suemasu,
     " p-BaSi₂/n-Si heterojunction solar cells with 9.0% efficiency, "
     43rd International Symposium on Compound Semiconductors, TuD2-5, Toyama, Japan, June 28, 2016.
234. (poster) M. Nakata, K. Toko, and T. Suemasu,
     " Al-Induced Crystallization of Intermediate-Composition SiGe on Insulator, "
     47th International Symposium on Control of Semiconductor Interfaces (ISCSI-VII) and International SiGe Technology and Device Meeting 2016 (ISTDM2016), FE-PB-18, Nagoya, Japan, June 10, 2016.
235. (poster) Kosuke O. Hara, Cham T. Trinh, Keisuke Arimoto, Junji Yamanaka, Kiyokazu Nakagawa, Yasuyoshi Kurokawa, Takashi Suemasu, and Noritaka Usami,
     " Control of the Electrical Properties of BaSi₂ Evaporated Films for Solar Cell Applications, "
     43rd Photovoltaic Specialists Conference, A18-748, Portland, USA, June 9, 2016.
236. (poster) Ryota Takabe, Hiroki Takeuchi, Weijie Du, Keita Ito, Kaoru Toko, Shigenori Ueda, Akio Kimura, and Takashi Suemasu,
     " Band alignments at native oxide/BaSi₂ and amorphous-Si/BaSi₂ interfaces measured by hard x-ray photoelectron spectroscopy, "
     43rd Photovoltaic Specialists Conference, A45-758, Portland, USA, June 9, 2016.
237. (invited) T. Suemasu,
     " Potential of Semiconducting BaSi₂ for Thin-Film Solar Cell Applications, "
     MRS Spring Meeting, EP4.1.02, Phoenix, USA, March 29, 2016.
238. (Oral) K. Ito, Y. Yasutomi, K. Kabara, T. Gushi, S. Higashikozono, K. Toko, M. Tsunoda, and T. Suemasu,
     " Perpendicular magnetic anisotropy of Co_xMn_4-xN (x = 0 and 0.2) epitaxial films on SrTiO₃(001) substrates, "
     13th Joint MMM-Intermag Conference, BF-12, San Diego, USA, Jan. 12, 2016.

FY 2015

239. (Oral) C. T. Trinh, Y. Nakagawa, K.O. Hara, T. Suemasu, and N. Usami,,
     " Growth of High Quality BaSi₂ Film on Ge Substrate by Vacuum Evaporation Method,, "
     25th International Photovoltaic Science and Engineering Conference (PVSEC-25), SiF-O-08, Busan, Nov. 16, 2015.
240. (poster) Y. Li, M. Baba, Trinh Cham Thi, K. Toko, T. Sekiguchi, N. Usami, and T. Suemasu,
     " Study on surface potential distribution and minotiry-carrier lifetime mapping of BaSi₂ formed on multicrystalline Si substrates, "
     25th International Photovoltaic Science and Engineering Conference (PVSEC-25), A-P-26, Busan, Nov. 17, 2015.
241. (Oral) N. Oya, K. Toko, and T. Suemasu,
     " Sn-doped Al-induced Layer Exchange for Large-grained GeSn Thin Films on Insulators, "
     2015 International Conference on Solid State Devices and Materials (SSDM 2015), G-4-2, Sapporo, Sept. 29, 2015.
242. (Oral) M. Nakata, K. Toko, W. Jevasuwan, N. Fukata, and T. Suemasu,
     " Fabrication of Vertical Ge Nanowires on Amorphous Substrates by Combining Au-seeded Chemical-Vapor Deposition with Al-induced Crystallization, "
     2015 International Conference on Solid State Devices and Materials (SSDM 2015), D-7-2, Sapporo, Sept. 30, 2015.
243. (Oral) T. Gushi, K. Ito, S. Honda, Y. Yasutomi, S. Higashikozono, K. Toko, H. Oosato, Y. Sugimoto, K. Asakawa, N. Ota, and T. Suemasu,
     " Observation and control of magnetic domain structure in Fe₄N ferromagnetic nanowire, "
     ASCO-NANOMAT 2015, VI.24.03o, Vladivostok, Russia, August 25, 2015.
244. (invited) T. Suemasu,
     " Present status towards BaSi₂ thin-film solar cells, "
     ASCO-NANOMAT 2015,PS.25.01i, Vladivostok, Russia, August 24, 2015.
245. (invited) T. Suemasu,
     " Exploration the Potential of Semiconducting BaSi₂ for Thin-film Solar Cell Applications, "
     Symposium of B: Earth Abundant Materials for Solar Energy Harvesting, ICMAT, Singapore, July 1, 2015.
246. (poster) M. Baba, K. Watanabe, K. O. Hara, T. Sekiguchi, W. Du, R. Takabe, K. Toko, N. Usami, and T. Suemasu,
     " Cross-sectional electric field distributions in BaSi₂ homo and BaSi₂/Si hetero pn junctions, "
     42nd IEEE Photovoltaic Specialists Conference, A11-591, New Orleans, USA, June 17, 2015.
247. (poster) R. Takabe, K. Toko, K. O. Hara, N. Usami, and T. Suemasu,
     " Fabrication and Characterization of BaSi₂ Films on Ge(111) Substrates by Molecular Beam Epitaxy, "
     42nd IEEE Photovoltaic Specialists Conference, C1-608, New Orleans, USA, June 17, 2015.
248. (invited) T. Suemasu,
     " Exploration of the possibility of semiconducting BaSi₂ nanofilms for solar cell applications, "
     Nanomeeting 2015, I-18, Minsk, Belarus, May 29, 2015.
249. (invited) T. Suemasu,
     " Recent development towards BaSi₂ thin film solar cells, "
     5th Asia-Africa Sustainable Energy Forum, 13a-S9-3, Tsukuba, Japan, May 13, 2015.
250. (poster) Y. Li, M. Baba, R. Numata, K. Toko, N. Usami, T. Sekiguchi, and T. Suemasu,
     " Surface potential distribution of BaSi₂ thin film on multicrystalline Si by Kelvin probe force microscopy, "
     5th Asia-Africa Sustainable Energy Forum,12p-PO-9, Tsukuba, Japan, May 12, 2015.
251. (poster) M. Baba, K. Watanabe, T. Sekiguchi, N. Saito, N. Yoshizawa, K. O. Hara, N. Usami, and T. Suemasu,
     " Grain boundary analysis of semiconducting BaSi₂ for solar cell applications, "
     5th Asia-Africa Sustainable Energy Forum,12p-PO-7, Tsukuba, Japan, May 12, 2015.
252. (poster) D. Tsukahara, M. Baba, K. Toko, K. Watanabe, T. Sekiguchi, and T. Suemasu,
     " Investigation of a BaSi₂ pn junction on Si(111) by Kelvin probe force microscopy, "
     5th Asia-Africa Sustainable Energy Forum,12p-PO-6, Tsukuba, Japan, May 12, 2015.
253. (poster) W. Du, R. Takabe, M. Baba, K. Toko, N. Usami, and T. Suemasu,
     " Formation of BaSi₂ heterojunction solar cells by transparent MoO_x hole contacts, "
     5th Asia-Africa Sustainable Energy Forum,12p-PO-5, Tsukuba, Japan, May 12, 2015.
254. (poster) H. Takeuchi, W. Du, R. Takabe, K. Toko, K. O. Hara, N. Usami, and T. Suemasu,
     " Characterization of oxides/BaSi₂ interface states using high-low capacitance method,"
     5th Asia-Africa Sustainable Energy Forum,12p-PO-4, Tsukuba, Japan, May 12, 2015.
255. (poster) R. Takabe, K. Toko, K. O. Hara, N. Usami, and T. Suemasu,
     " Crystal growth of BaSi₂ continous films on Ge(111) substrate, "
     5th Asia-Africa Sustainable Energy Forum, 12p-PO-3, Tsukuba, Japan, May 12, 2015.
256. (Oral) Toshiki Gushi, Keita Ito, Syuta Honda, Yoko Yasutomi, Soma Higashikozono, Kaoru Toko, Hirotaka Oosato, Yoshimasa Sugimoto, Kiyoshi Asakawa, Norio Ota, and Takashi Suemasu,
     " Control of domain wall position in L-shaped Fe4N negatively spin polarized ferromagnetic nanowire, "
     IEEE International Magnetics Conference 2015, EC-11, May 14, 2015, Beijing, China.

FY 2014

257. (invited) T. Suemasu,
     " Possibility of Si-based new materials for thin-film solar cell applications, "
     Tunisia-Japan Symposium (TJS 2014), Tunis, Nov. 30, 2014.
258. (Poster) W. Du, K. Toko, M. Baba, R. Takabe, N. Usami, and T. Suemasu,
     " Si-based New Material for High Efficiency Thin Film Solar Cell Applications, "
     6th World Conference on Photovoltaic Energy Conversion, 3WePo.5.22, Kyoto, Nov. 26, 2014 .
259. (Poster) Y. Nakagawa, K. O. Hara, T. Suemaus, and N. Usami,
     " Fabrication of Single-phase BaSi₂ Thin Films on Silicon Substrates by Vacuum Evaporation for Solar Cell Applications, "
     6th World Conference on Photovoltaic Energy Conversion, 3WePo.5.21, Kyoto, Nov. 26, 2014 .
260. (Poster) H. Takeuchi, W. Du, M. Baba, R. Takabe, K. Toko, and T. Suemasu,
     " Defect Levels in N-BaSi₂ Epitaxial Films Measured on Metal/n-BaSi₂ Schottky-junction and n-BaSi₂/p-Si Heterojunction Diodes by Deep Level Transient Spectroscopy, "
     6th World Conference on Photovoltaic Energy Conversion, 3WePo.5.20, Kyoto, Nov. 26, 2014 .
261. (Poster) K. Nakazawa, K. Toko, and T. Suemasu,
     " Growth and Photoresponse Properties of Polycrystalline Ge Films Formed on Al-induced Crystallization Seed Layer, "
     6th World Conference on Photovoltaic Energy Conversion, 3TuPo.6.22, Kyoto, Nov. 25, 2014 .
262. (Poster) R. Takabe, M. Baba, W. Du, K. Toko, K. O. Hara, N. Usami, and T. Suemasu,
     " Epitaxial Growth of BaSi₂ Films on Ge(111) Substrates by Molecular Beam Epitaxy, "
     6th World Conference on Photovoltaic Energy Conversion, 3TuPo.6.18, Kyoto, Nov. 25, 2014 .
263. (Poster) R. Takabe, K. O. Hara, M. Baba, W. Du, K. Toko, N. Usami, and T. Suemasu,
     " Effects of Surface Conditions and Grain Boundaries on Minority-carrier Lifetime in Undoped n-BaSi₂ on Si(111), "
     6th World Conference on Photovoltaic Energy Conversion, 3TuPo.5.23, Kyoto, Nov. 25, 2014 .
264. (Poster) N. Zhang, K. Nakamura, M. Baba, K. Toko, and T. Suemasu,
     " Evaluation of Diffusion Coefficients of n-type and p-type Impurities in BaSi₂ Epitaxial Films Grown by Molecular Beam Epitaxy, "
     6th World Conference on Photovoltaic Energy Conversion, 3TuPo.5.21, Kyoto, Nov. 25, 2014 .
265. (Poster) D. Tsukahara, M. Baba, K. Toko, K. O. Hara, N. Usami, K. Watanabe, T. Sekiguchi, and T. Suemasu,
     " Evaluation of Surface Potential Distributions Around Grain Boundaries and Minority-carrier Diffusion Lengths in Impurity Doped n- and p- type BaSi₂ Epitaxial Films, "
     6th World Conference on Photovoltaic Energy Conversion, 3TuPo.5.20, Kyoto, Nov. 25, 2014 .
266. (Poster) K. Toko, K. Nakazawa, N. Oya, N. Usami, and T. Suemasu,
     " Large-grained Ge Thin Films on Glass Formed by Al-induced Crystallization for Inexpensive Tandem Solar Cells, "
     6th World Conference on Photovoltaic Energy Conversion, 2TuPo.3.37, Kyoto, Nov. 25, 2014 .
267. (Oral) K. Ito, T. Sanai, Y. Yasutomi, T. Gushi, K. Toko, H. Yanagihara, M. Tsunoda, E. Kita, and T. Suemasu,
     " Mossbauer study on epitaxial CoxFe4-xN films grown by molecular beam epitaxy, "
     59th Annual Magnetism and Magnetic Materials (MMM) Conference, HF-09, Honolulu, USA, Nov. 7, 2014.
268. (invited) K. Ito and T. Suemasu,
     " Magnetic properties of anti-perovskite type transition metal ferromagnetic nitrides, "
     226th Meeting of The Electrochemical Society, 910, Cancun, Mexico, Oct. 7, 2014.
269. (Oral) N. Oya, K. Toko, and T. Suemasu,
     " Metal-Induced Crystallization of Amorphous Ge on Insulators: Comparative Study of Catalytic Effects between Al and Sn, "
     2014 International Conference on Solid State Devices and Materials (SSDM 2014), C-4-3, Tsukuba, Sept. 10, 2014 .
270. (Poster) Yoji Imai, Mitsugu Sohma, and Takashi Suemasu,
     " Energetic evaluation of the possibility of interstitial compound formation of BaSi₂ with 2p-, 3s-, and 3d- elements by first-principle calculations, "
     ICSS Silicide 2014, 20-P25, Tokyo, July 20, 2014 .
271. (Poster) T. Suemasu,
     " Exploring the possibility of semiconducting BaSi₂ for thin-film solar cell applications, "
     ICSS Silicide 2014, 20-P24, Tokyo, July 20, 2014 .
272. (Poster) N. A. A. Latiff, T. Yoneyama, M. Mesuda, H. Kuramochi, K. Toko, and T. Suemasu,
     " Fabrication and evaluation of B-doped p-BaSi₂ films by RF sputtering on glass substrate, "
     ICSS Silicide 2014, 20-P8, Tokyo, July 20, 2014 .
273. (Poster) N. Oya, K. Toko, N. Usami, and T. Suemasu,
     " Effect of substrate thickness on Al-induced-crystallized Ge thin films on flexible polyimide substrates, "
     ICSS Silicide 2014, 19-P29, Tokyo, July 19, 2014 .
274. (Poster) Koki Nakazawa, Kaoru Toko, and Takashi Suemasu,
     " Removal of Ge islands in Al-induced crystallized Ge thin films on glass substrates by selective etching technique, "
     ICSS Silicide 2014, 19-P28, Tokyo, July 19, 2014 .
275. (Poster) Masakazu Baba, Kosuke O. Hara, Daichi Tsukahara, Kaoru Toko, Noritaka Usami, and Takashi Suemasu,
     " Crystal growth of undoped and impurity doped BaSi₂ films on poly-crystalline Si, "
     ICSS Silicide 2014, 19-P20, Tokyo, July 19, 2014 .
276. (Poster) Daichi Tsukahara, Masakazu Baba, Ryota Takabe, Kaoru Toko, Kosuke O. Hara, Noritaka Usami, Kentaro Watanabe, Takashi Sekiguchi, and Takashi Suemasu,
     " Investigation of surface potential distributions of impurity-doped n-BaSi₂ thin-films by Kelvin probe force microscopy, "
     ICSS Silicide 2014, 19-P19, Tokyo, July 19, 2014 .
277. (Poster) Ryota Takabe, Kosuke O. Hara, Masakazu Baba, Weijie Du, Naoya Shimada, Kaoru Toko, Noritaka Usami, and Takashi Suemasu,
     " Effect of grain areas on minority-carrier lifetime in undoped n-BaSi₂ on Si(111), "
     ICSS Silicide 2014, 19-P18, Tokyo, July 19, 2014 .
278. (Poster) Hiroki Takeuchi, Weijie Du, Masakazu Baba, Ryota Takabe, Kaoru Toko, and Takashi Suemasu,
     " Characterization of defect levels in BaSi₂ epitaxial films on Si(111) by deep level transient spectroscopy, "
     ICSS Silicide 2014, 19-P17, Tokyo, July 19, 2014 .
279. (Poster) Weijie Du, Masakazu Baba, Ryouta Takabe, Ning Zhang, Kaoru Toko, Noritaka Usami, and Takashi Suemasu,
     " Investigation on the J-V characteristics of BaSi₂ Schottky junctions with different metal electrodes, "
     ICSS Silicide 2014, 19-P16, Tokyo, July 19, 2014 .
280. (Oral) Kosuke O. Hara, Yoshihiko Nakagawa, Takashi Suemasu, and Noritaka Usami,
     " Realization of single-phase BaSi₂ films by vacuum evaporation with appropriate optical properties for solar cell applications, "
     ICSS Silicide 2014, 19-PM-I-6, Tokyo, July 19, 2014 .
281. (invited) Weijie Du, Masakazu Baba, Kaoru Toko, Kosuke O. Hara, Kentaro Watanabe, Takashi Sekiguchi, Noritaka Usami, and Takashi Suemasu,
     " Si-based new material for high-efficiency thin-film solar cells, "
     21st International Workshop on Active-Matrix Flatpanel Displays and Devices -TFT Technologies and FPD Materials- (AM-FPD 14), S3-3, Kyoto, July 3, 2014.
282. (Oral) K. Nakazawa, K. Toko, N. Usami, and T. Suemasu,
     " Effect of diffusion control layer on reverse Al-induced layer exchange process for high-quality Ge/Al/glass structure, "
     56th Electronic Materials Conference, H10, Santa Barbara, USA, June 25, 2014.
283. (Oral) R. Takabe, K. O. Hara, M. Baba, W. Du, K. Toko, N. Usami, and T. Suemasu,
     " Correlation between grain size and minority-carrier lifetime in undoped n-BaSi₂ epitaxial films, "
     56th Electronic Materials Conference, H4, Santa Barbara, USA, June 25, 2014.
284. (Poster) W. Du, M. Baba, K. Toko, N. Usami, and T. Suemasu,
     " Electrical and optical characterizations of an n-BaSi₂/p-Si heterojunction for solar cell applications, "
     40th IEEE Photovoltaic Specialist Conference, A10-88, Denver, USA, June 10, 2014.
285. (Poster) M. Baba, K. O. Hara, K. Watanabe, W. Du, D. Tsukahara, K. Toko, K. Jiptner, T. Sekiguchi, N. Usami, and T. Suemasu,
     " Grain boundaries characterization of semiconducting BaSi₂ thin films on a polycrystalline Si substrate, "
     40th IEEE Photovoltaic Specialist Conference, A7-87, Denver, USA, June 10, 2014.
286. (invited) T. Suemasu,
     " Si-based new material BaSi₂ for high-efficiency thin-film solar cells , "
     International Symposium on Energy Materials and Nanotechnology (ISEMN 2014), Wuhan, China, April 19, 2014.

FY 2013

287. (Oral) K. Ito, T. Sanai, Y. Yasutomi, S. Zhu, K. Toko, Y. Takeda, Y. Saitoh, A. Kimura, and T. Suemasu,
     " X-ray magnetic circular dichroism for Co₃FeN films grown by molecular beam epitaxy , "
     58th Annual Conference on MMM, AB-10, Denver, USA, Nov. 5, 2013.
288. (Oral) Y. Yasutomi, K. Ito, T. Sanai, K. Toko, and T. Suemasu,
     " Perpendicular magnetic anisotropy of Mn₄N films on SrTiO₃(001), "
     58th Annual Conference on MMM, GD-08, Denver, USA, Nov. 8, 2013.
289. (Poster) W. Du, M. Baba, K. Toko, N. Usami, and T. Suemasu,
     " Fabrication of the BaSi₂ p-n junction diode on a p⁺-BaSi₂/p⁺-Si tunnel junction towards solar cell applications , "
     2013 23rd Photovoltaic Science and Engineering Conference, 2-P-20, Taiwan, Oct. 30, 2013.
290. (Oral) M. Baba, S. Tsurekawa, K. O. Hara, N. Usami, K. Toko, and T. Suemasu,
     " Investigation about Grain Boundary Character in Semiconducting BaSi₂ by Kelvin Probe Force Microscopy, "
     2013 23rd Photovoltaic Science and Engineering Conference, A3-3-o-9, Taiwan, Oct. 30, 2013.
291. (Oral) N, Zhang, K. Nakamura, M. Baba, K. Toko, and T. Suemasu,
     " Diffusion Coefficients of Impurity Atoms in BaSi₂ Epitaxial Films Grown by Molecular Beam Epitax, "
     2013 International Conference on Solid State Devices and Materials, N-8-5, Fukuoka, Japan, Sept. 27, 2013.
292. (Poster) N.A.A. Latiff, T. Yoneyama, T. Shibutami, K. Matsumaru, K. Toko, and T. Suemasu,
     " Direct Formation of Polycrystalline BaSi₂ Films on Glass Substrate by RF Sputtering, "
     2013 International Conference on Solid State Devices and Materials, PS-15-17, Fukuoka, Japan, Sept. 26, 2013.
293. (Poster) R. Takabe, K. Nakamura, M. Baba, W. Du, M. A. Khan, K. Toko, M. Sasase, K. O. Hara, N. Usami, and T. Suemasu,
     " Fabrication and Characterization of BaSi₂ Epitaxial Films over 1.5μm on Si(111), "
     2013 International Conference on Solid State Devices and Materials, PS-15-16, Fukuoka, Japan, Sept. 26, 2013.
294. (Oral) M. Baba, S. Tsurekawa, W. Du, K. Toko, K. O. Hara, N. Usami, and T. Suemasu,
     " Potential barrier height at grain boundaries in BaSi₂ epitaxial thin films studied by Kelvin probe force microscopy, "
     2013 JSAP-MRS Joint Symposia, Symposium 5, 16p-M2-4, Kyoto, Japan, Sept. 16, 2013.
295. (Oral) K. O. Hara, N. Usami, K. Nakamura, R. Takabe, M. Baba, K. Toko, and T. Suemasu,
     " On the Origin of Drastic Enhancement of Excess-Carrier Lifetime by Annealing BaSi₂ Epitaxial Films, "
     2013 JSAP-MRS Joint Symposia, Symposium 5, 18p-M2-11, Kyoto, Japan, Sept. 18, 2013.
296. (Oral) K. Toko, K. Nakazawa, R. Numata, N. Usami, and T. Suemasu,
     " Large-grained Al-induced crystallized Ge thin films for developing tandem solar cells on glass substrates, "
     2013 JSAP-MRS Joint Symposia, Symposium 5, 18p-M2-12, Kyoto, Japan, Sept. 18, 2013.
297. (Oral) W. Du, M. Baba, R. Takabe, K. Toko, N. Usami, and T. Suemasu,
     " Tunneling Properties of Heavily Doped BaSi₂/Si Hetero-junctions in Different Structures for BaSi₂ Solar Cells on Si Surfaces, "
     2013 JSAP-MRS Joint Symposia, Symposium 5, 18p-M2-10, Kyoto, Japan, Sept. 18, 2013.
298. (Oral) W. Du, K. Nakamura, M. Baba, M. Ajmal Khan, K. Toko, N. Usami, and T. Suemasu,
     " Investigation on the tunneling properties of heavily doped BaSi₂ layers grown on low-resistivity Si substrates, "
     2nd Asian School-Conference on Physics and Technology of Nanostructured Materials, XI.26.04o, Vladivostok, Russia, Aug. 26, 2013.
299. (Oral) M. Baba, S. Tsurekawa, K. Nakamura, W. Du, S. koike, K. Toko, and T. Suemasu,
     " Evaluation of BaSi₂ epitaxial films grain boundary character by Kelvin probe force microscopy, "
     2nd Asian School-Conference on Physics and Technology of Nanostructured Materials, IV.26.02o, Vladivostok, Russia, Aug. 26, 2013.
300. (Oral) R. Numata, K. Toko, N. Saitoh, N. Yoshizawa, N. Usami, and T. Suemasu,
     " Formation of Si/Al/SiO₂ structures for Si-based solar cells by inverted Al-induced layer exchange process, "
     2nd Asian School-Conference on Physics and Technology of Nanostructured Materials, XI.24.01o, Vladivostok, Russia, Aug. 24, 2013.
301. (Oral) K. Toko, N. Saitoh, N. Yoshizawa, N. Usami, and T. Suemasu,
     " Al-induced crystallized Ge thin films on SiO₂ as epitaxial template for advanced materials, "
     2nd Asian School-Conference on Physics and Technology of Nanostructured Materials, II.22.05o, Vladivostok, Russia, Aug. 22, 2013.
302. (invited) T. Suemasu,
     " Present status for Si-based high-efficiency thin-film solar cells using semiconducting silicide BaSi₂: formation of a pn junction, "
     2nd Asian School-Conference on Physics and Technology of Nanostructured Materials, PS.22.03i, Vladivostok, Russia, Aug. 22, 2013.
303. (Poster) K. Nakazawa, K. Toko, N. Saitoh, N. Yoshizawa, N. Usami, and T. Suemasu,
     " Effect of Ge/Al thickness on Al-induced crystallization of amorphous Ge layers on glass substrates, "
     APAC Silicide 2013, 28-P18, Tsukuba, Japan, July 28, 2013.
304. (Poster) N. Shimada, M. Baba, K. Nakamura, K. Toko, and T. Suemasu,
     " Investigation of electrical conductivities and anti-reflection properties of AZO formed by RF sputtering for BaSi₂ solar cells, "
     APAC Silicide 2013, 28-P8, Tsukuba, Japan, July 28, 2013.
305. (Poster) S. Koike, M. Baba, K. Nakamura, K. M. Ajmal, W. Du, K. Toko, and T. Suemasu,
     " Fabrication of n⁺-BaSi₂/p⁺-Si Tunnel Junction on Si(001) Surface for characterization of photoresponse properties of BaSi₂ epitaxial films, "
     APAC Silicide 2013, 28-P7, Tsukuba, Japan, July 28, 2013.
306. (Poster) W. Du, M. Baba, R. Takarabe, N. Zhang, K. Toko, N. Usami, and T. Suemasu,
     " Investigation on the Surface Morphologies and Tunneling Properties of BaSi₂/Si hetero-junction for BaSi₂ solar cell applications, "
     APAC Silicide 2013, 28-P6, Tsukuba, Japan, July 28, 2013.
307. (Poster) N. Zhang, K. Nakamura, M. Baba, K. Toko, and T. Suemasu,,
     " Evaluation of diffusion coefficients of n-type impurities in MBE-grown BaSi₂ epitaxially layers, "
     APAC Silicide 2013, 28-P5, Tsukuba, Japan, July 28, 2013.
308. (Poster) R. Numata, K. Toko, N. Usami, and T. Suemasu,
     " Fabrication of BaSi2 films on (111)-oriented Si layers formed by inverted Al-induced crystallization method on glass structures, "
     APAC Silicide 2013, 28-P4, Tsukuba, Japan, July 28, 2013.
309. (Poster) R. Takabe, M. Baba, K. Nakamura, W. Du, M. A. Khan, S. Koike, K. Toko, K. O. Hara, N. Usami, and T. Suemasu,
     " Fabrication and characterizations of phosphorous-doped n-type BaSi₂ epitaxial films grown by molecular beam epitaxy, "
     APAC Silicide 2013, 28-P3, Tsukuba, Japan, July 28, 2013.
310. (Poster) N. A. A. Latiff, T. Yoneyama, T. Shibutami, K. Matsumaru, K. Toko and T. Suemasu,
     " Formation and characterizations of BaSi₂ films on glass substrates by RF sputtering, "
     APAC Silicide 2013, 28-P2, Tsukuba, Japan, July 28, 2013.
311. (Poster) M. Baba, K. O. Hara, N. Saito, N. Yoshizawa, N. Usami, K. Toko and T. Suemasu,
     " Epitaxial growth of BaSi₂ films with large grains using vicinal Si(111) substrates, "
     APAC Silicide 2013, 29-P1, Tsukuba, Japan, July 28, 2013.
312. (Oral) K. O. Hara, N. Usami, K. Nakamura, R. Takabe, M. Baba, K. Toko, and T. Sueamasu,
     " Mechanism of Strain Relaxation in BaSi₂ Epitaxial Films on Si(111) Substrates during Post-Growth Annealing and Application for Film Exfoliation, "
     APAC Silicide 2013, 28-AM-IV-2, Tsukuba, Japan, July 28, 2013.
313. (Oral) K. Toko, K. Nakazawa, R. Numata, N. Usami, T. Suemasu,
     " Al-induced crystallized Si and Ge thin films on insulators as epitaxial seeds for silicide materials, "
     APAC Silicide 2013, 28-AM-III-3, Tsukuba, Japan, July 28, 2013.
314. (Poster) K. O. Hara, N. Usami, K. Nakamura, R. Takabe, M. Baba, K. Toko, and T. Suemasu,
     "quot; Improvement of Excess-Carrier Lifetime in BaSi₂ Epitaxial Films by Post-Growth Annealing, "
     39th IEEE Photovoltaic Specialist Conference, I24,Tampla, USA, June. 18, 2013.
315. (Poster) M. Ajmal Khan, K. O. Hara, W. Du, M. Baba, K. Nakamura, M. Suzuno, K. Toko, N. Usami, T. Suemasu,
     " Enhanced p-type conductivity and band gap narrowing in heavily B-doped p-BaSi₂ films grown by molecular beam epitaxy , "
     39th IEEE Photovoltaic Specialist Conference, I35, Tampla, USA, June. 18, 2013.
316. (Poster) M. Baba, S. Tsurekawa, K. Nakamura, Du Weijie, S. Koike, K. Toko, K. O Hara, N. Usami, and T. Suemasu,
     " Characterization of grain boundary properties in BaSi₂ epitaxial films on Si(111) and Si(001) by Kelvin probe force microscopy, "
     39th IEEE Photovoltaic Specialist Conference, I16, Tampla, USA, June. 18, 2013.
317. (Poster) R. Numata, K. Toko, N. Saitoh, N. Yoshizawa, N. Usami, and T. Suemasu,
     " Large-Grained Oriented Polycrystalline Si/Al/SiO2 Structures Formed by Al-Induced Layer Exchange Process, "
     The 6th International Symposium on Control of Semiconductor Interfaces (ISCSI-VI), P1-14, Fukuoka, JAPAN, June 3, 2013.
318. (Poster) K O. Hara, Y. Hoshi, N. Usami, Y. Shiraki, K. Nakamura, K. Toko and T. Suemasu
     " N-type Doping of BaSi₂ Epitaxial Films by Phosphorus Ion Imp, "
     The 6th International Symposium on Control of Semiconductor Interfaces (ISCSI-VI),P1-17, Fukuoka, JAPAN, June 3, 2013.
319. (Oral) K. Toko, R. Numata, K. Nakazawa, N. Usami, and T. Suemasu
     " Growth Promotion of Al-Induced Crystallized Ge Thin-Films on Insulators by Enhancing Ge-Supply into Al Layers, "
     The 6th International Symposium on Control of Semiconductor Interfaces (ISCSI-VI), B2-2, Fukuoka, JAPAN, June 6, 2013.
320. (invited) T. Suemasu,
     " Towards high-efficiency thin-film solar cells using Si-based new material, "
     3rd Aisa-Arab Sustainable Energy Form jointly with 5th Int. Workshop on Sahara Solar Breeder, Aomori, May 7, 2013.
321. (invited) T. Suemasu,
     " Semiconducting BaSi₂ pn junction solar cells , "
     Japan-Germany JST International Symposium, Berlin, Germany, Jan.11, 2013.

FY 2012

322. (invited) W. Du, M. Baba, K. Nakamura, M. A. Khan, K. Toko, N. Usami, and T. Suemasu,
     " Large internal quantum efficiency exceeding 70% in semiconducting BaSi₂ for thin-film solar cell applications, "
     22th Photovoltaic Science and Engineering Conference (PVSEC), Hangzhou, China, Nov. 6, 2012.
323. (Poster) M. Baba, K. Nakamura, W. Du, M. A. Khan, S. Koike, K. Toko, and T. Suemasu,
     " Fabrication of large-grained BaSi₂ epitaxially films for high-efficiency thin-film solar cells , "
     22th Photovoltaic Science and Engineering Conference (PVSEC), Hangzhou, China, Nov, 2012.
324. (Poster) K. Nakamura, K. Toh, M. Baba, M. Ajmal Khan, W. Du, K. Toko, and T. Suemasu,
     " Investigation of lattice and grain-boundary diffutions of impurity atoms in BaSi₂ epitaxial layers grown by molecular beam epitaxy, "
     8th International Nanotechnology Conference, Tsukuba, Japan, May 8, 2012.
325. (Poster) M. Baba, K. Toh, K. Toko, K. Jiptner, T. Sekiguchi, N. Saito, N. Yoshizawa, N. Usami, and T. Suemasu,
     " Investigation of grain boundaries in BaSi₂ epitaxial films on Si(111) substrates, "
     8th International Nanotechnology Conference, Tsukuba, Japan, May 8, 2012.
326. (Poster) W. Du, K. Toko, N. Usami, and T. Suemasu,
     " Excellent photoresponse properties of BaSi₂ thin films grown by molecular beam epitaxy for photovoltaic application, "
     8th International Nanotechnology Conference, Tsukuba, Japan, May 8, 2012.
327. (Poster) K. Ito, K. Harada, T. Sanai, K. Okamoto, K. Kabara, H. Takahashi, K. Toko, S. Ueda, Y. Imai, K. Miyamoto, T. Okuda, M. Tsunoda, A. Kimura, and T. Suemasu,
     " Negative spin-polarization in ferromagnetic Fe₄N films, "
     8th International Nanotechnology Conference, Tsukuba, Japan, May 8, 2012.
328. (Oral) K. Toko, M. Kurosawa, N. Fukata, N. Saitoh, N. Yoshizawa, N. Usami, M. Miyao, T. Suemasu,
     " Temperature dependent Al-induced crystallization of amorphous Ge thin films on glass substrates, "
     2012 International Conference on Solid State Devices and Materials (SSDM 2012), I-2-3, Kyoto, Japan, Sept.25, 2012.
329. (Oral) M. Ajmal Khan, K O. Hara, K. Nakamura, M. Baba, K. Toh, M. Suzuno, K. Toko, N. Usami, and T. Suemasu,
     " Molecular beam epitaxy of boron doped p-type BaSi₂ epitaxial films on Si(111) substrates for thin-film solar cells, "
     International Conference of Molecular Beam Epitaxy, WeA-1-2, Nara, Japan, Sept.26, 2012.
330. (Poster) T. Sanai, K. Ito, K. Toko, and T. Suemasu,
     " Epitaxial growth of Co_xFe_4-xN (0.4<x<2.9) thin films on SrTiO₃(001) grown by molecular beam epitaxy, "
     International Conference of Molecular Beam Epitaxy, MoP-34, Nara, Japan, Sept.24, 2012.
331. (Poster) K. Nakamura, K. Toh, M. Baba, K. M. Ajmal, W. Du, K. Toko, and T. Suemasu,
     " Lattice and grain-boundary diffusions of impurity atoms in BaSi₂ epitaxial layers grown by molecular beam epitaxy , "
     International Conference of Molecular Beam Epitaxy, ThP-36, Nara, Japan, Sept.27, 2012.
332. (Oral) S. Koike, K. Toh, M. Baba, K. Toko, K. Hara, N. Usami, N. Saito, N. Yoshizawa, and T. Suemasu,
     " Large photoresponsivity in semiconducting BaSi₂ epitaxial films grown on Si(001) substrates by molecular beam epitaxy, "
     International Conference of Molecular Beam Epitaxy, WeA-1-1, Nara, Japan, Sept.26, 2012.
333. (Poster) H. Mushu, M. Suzuno, K. Toko, and T. Suemasu,
     " Growth of orthorhombic β-FeSi₂ epitaxial layers with preferred in-plane orientation on Si(011) by molecular beam epitaxy, "
     International Conference of Molecular Beam Epitaxy, Th-P-6, Nara, Japan, Sept.27, 2012.
334. (Poster) M. Baba, K. Toh, K. Toko, Kosuke O. Hara, N. Usami, N. Saito, N. Yoshizawa, and T. Suemasu,
     " Formation of large-grain-sized BaSi₂ epitaxial layers on Si(111) grown by molecular beam epitaxy , "
     International Conference of Molecular Beam Epitaxy, ThP-31, Nara, Japan, Sept.27, 2012.
335. (Oral) Y. Funase, M. Suzuno, K. Toko, and T. Suemasu,
     " Effect of atomic-hydrogen irradiation on reduction of residual carrier concentration in β-FeSi₂ films grown on Si substrates by atomic-hydrogen-assisted molecular beam epitaxy, "
     International Conference of Molecular Beam Epitaxy, FrA-1-5, Nara, Japan, Sept.28, 2012.
336. (Oral) Weijie Du, Kaoru Toko, Noritaka Usami and T. Suemasu,
     " Improved Photoresponsivity of BaSi₂ Epitaxial Films Grown on a Tunnel Junction for Photovoltaic Applications, "
     International Union of Materials Research Societies-International Conference on Electronic Materials 2012, B-9, Yokohama, Japan, Sept.23-28, 2012.
337. (Poster) Weijie Du, M. Suzuno, Muhammad Ajmal Khan, K. Toh, M. Baba, K. Nakamura,K. Toko, N. Usami, and T.Suemasu,
     " Improved internal quantum efficiency in high-quality BaSi₂ films grown by molecular beam epitaxy , "
     38th IEEE Photovoltaic Specialists Conference, Austin, USA, June 5, 2012.
338. (Oral) M. Baba, K. Toh, K. Toko, K. Jiptner, T. Sekiguchi, N. Saito, N. Yoshizawa, N. Usami, and T.Suemasu
     " Large minority-carrier diffusion length in n-type BaSi₂ epitaxial films on Si(111) by electron-beam-induced current technique, "
     Electronic Materials Conference, Pennsylvania State University, USA, June 21, 2012.
339. (Oral) K. Ito, K. Harada, K. Okamoto, T. Sanai, K. Toko, S. Ueda, Y. Imai, K. Miyamoto, T. Okuda, A. Kimura, T. Suemasu,
     " Negative spin polarization of Fe₄N observed by spin resolved photoemission spectroscopy, "
     2012 19th International Conference on Magnetism, Busan, Korea, July 13, 2012.

FY 2011

340. (Oral) K. O. Hara, N. Usami, K. Toh, K. Toko, and T. Suemasu,
     " Realization of large-domain Barium disilicide epitaxial thin film by introduction of miscut to Silicon(111) substrate, "
     2011 International Photovoltaic Science and Engineering Conference (PVSEC), 4A-2O-12, Fukuoka, Japan, Dec. 1, 2011.
341. (Oral) K. Jiptner, H. Kawakami, J. Chen, T. Suemasu and T. Sekiguchi,
     " Characterization of epitaxial β-FeSi₂ thin films on Si substrate by SEM, EBIC and EBSD imaging, "
     21st International Photovoltaic Science and Engineering Conference (PVSEC), 5C-5O-06, Fukuoka, Japan, Dec. 2, 2011
342. W. Du, T. Saito, M. Ajmal Khan, K. Nakamura, M. Baba, K. Toh, K. Toko, N. Usami, and T. Suemasu,
     " Improved photoresponsivity of undoped BaSi₂ layers grown on tunnel junction with reduced Sb diffusion, "
     2011 International Photovoltaic Science and Engineering Conference (PVSEC), 3D-2p-11, Fukuoka, Japan, Nov.30, 2011.
343. M. Ajmal Khan, T. Saito, K. Nakamura, M. Baba, K. Toh, W. Du, K. Toko, N. Usami, and T. Suemasu,
     " Electrical characterization of Cu, Ag doped BaSi₂ layers on Si(111) grown by molecular beam epitaxy for thin film solar cells "
     2011 International Photovoltaic Science and Engineering Conference (PVSEC), 4D-2p-15, Fukuoka, Japan, Dec.1, 2011.
344. A. Okada, K. Toko, K. Hara, N. Usami, and T. Suemasu,
     " Impact of diffusion barrier layer thickness on preferential orientation of Al-induced crystallized Si layers for BaSi₂ solar cell, "
     2011 International Photovoltaic Science and Engineering Conference (PVSEC), 4D-2p-12, Fukuoka, Japan, Dec. 1, 2011.
345. (Oral) W. Du, T. Saito, M. Ajmal Khan, K. Nakamura, M. Baba, K. Toh, K. Toko, N. Usami, and T. Suemasu,
     " Effect of Solid-Phase-Epitaxy Si Layers on Suppression of Sb Diffusion from Sb-Doped n⁺-BaSi₂/p⁺-Si Tunnel Junction to Undoped BaSi₂ Overlayers, "
     2011 International Conferenfce on Solid State Devices and Materials, L-3-3, Nagoya, September, 2011.
346. (Oral) A. Okada, K. Toko, K. Hara, N. Usami, and T. Suemasu,
     " Orientation control of Al-induced crystallized silicon by diffusion barrier layers, "
     2011 International Conferenfce on Solid State Devices and Materials, M-8-4, Nagoya, September, 2011.
347. (invited) T. Suemasu, M. Ajmal Khan, T. Saito, K. Toh, A. Okada, M. Baba, K. Nakamura, Du Weijie and T. Sekiguchi, and N. Usami,
     " Operation principles of solar cells - solar radiation, material requirements, photocurrent, photoresponse, and device configuration using semiconducting silicide BaSi₂, "
     Asian School-Conference on Physics and Technology of Nanostructured Materials, August 21-27, Vladivostok, Russia.
348. (invited) T. Suemasu, M. Suzuno, T. Koizumi,
     " 1.6μm electroluminescence of 0.4 mW at room temperature from Si-based double heterostructure light-emitting diodes using iron disilicide, "
     Symposium on Si-based optoelectronic materials and devices, May 24-27, Xiamen, China.
349. (Oral) M. Ajmal Khan, T. Saito1, K. Toh, M. Baba, K. Nakamura, Du Weijie, and T, Suemasu,
     " Optimization and control of electron and hole concentrations in Cu- and Ag-doped BaSi₂ grown by molecular beam epitaxy for the formation of efficient solar cells, "
     Asian School-Conference on Physics and Technology of Nanostructured Materials, X.25.01o, August 25, Vladivostok, Russia.
350. H. Kawakami, M. Suzuno, K. Akutsu, T. Yaguchi, J. Chen, K. Jiptner, T. Sekiguchi, and T. Suemasu,
     " Enhancement of photoresponsivity, monority-carrier diffusion length and lifetime in β-FeSi₂ films grown by atomic hydrogen-assisted molecular beam epitaxy, "
     Asian School-Conference on Physics and Technology of Nanostructured Materials, PO.II.25.18, August 25, Vladivostok, Russia.
351. (Oral) K. S. Makeba, M. Suzuno, K. Harada, H. Akinaga, and T. Suemasu,
     " Correlation between resonant tunneling voltages and Fe₃Si quantum well wideth in ferromagnetic CaF₂/Fe₃Si/CaF₂ resonant tunneling diode, "
     Asian School-Conference on Physics and Technology of Nanostructured Materials, III.26.04o, August 26, Vladivostok, Russia.
352. (Oral) M. Suzuno, K. Akutsu, H. Kawakami, T. Yaguchi, K. Akiyama, and T. Suemasu,
     " MicroChannel epitaxy of β-FeSi₂ on Si(001) Substrate, "
     Asian School-Conference on Physics and Technology of Nanostructured Materials, III.26.01o, Augusut 26, Vladivostok, Russia.
353. (Oral) K. Ito, G. H. Lee, K. Harada, M. Ye, Y. Takeda, Y. Saito, T. Suemasu, A. Kimura, and H. Akinaga,
     " XMCD measurements for γ'-Fe₄N thin films grown by MBE, "
     Asian School-Conference on Physics and Technology of Nanostructured Materials, VII.27.03o, August 27, Vladivostok, Russia.
354. (Oral) K. Harada, K. S. Makabe, H. Akinaga, and T. Suemasu,
     " Realization of an anti-parallel state of magnetization orientation for measuring TMR effects in Fe/Fe₃Si/CaF₂/Fe₃ MTJ structure, "
     Asian School-Conference on Physics and Technology of Nanostructured Materials, V.27.06o, August 27, Vladivostok, Russia.
355. (Oral) A. Okada, N. Usami, and T. Suemasu,
     " Formation and orientation control of Al-induced crystallized Si thin films on conducting layers, "
     Asian School-Conference on Physics and Technology of Nanostructured Materials, II.22.09o, August 22, Vladivostok, Russia.
356. (Oral) D. Weijie, T. Saito, M. Ajmal Khan, K. Nakamura, M. Baba, K. Toh, N. Usami, and T. Suemasu,
     " High quality undoped BaSi₂ grown on n⁺-BaSi₂/p⁺-Si tunnel junction with reduced Sb diffusion, "
     Asian School-Conference on Physics and Technology of Nanostructured Materials, III.26.02o, August 26, Vladivostok, Russia.
357. (Oral) K. Ito, G. H. Lee, K. Harada, M. Ye, Y. Takeda, Y. Saito, T. Suemasu, A. Kimura, and H. Akinaga,
     " XMCD measurement of molecular beam epitaxy γ'-Fe₄N thin films on LaAlO₃(100) and MgO(100) substrates , "
     Electron Materials Conference, June 23, 2011, Santa Barabara, USA.
358. (Oral) Keita Ito, Geun Hyoung Lee, Kazunori Harada, Mitsushi Suzuno, Mao Ye, Takashi Suemasu, Akio Kimura, and Hiro Akinaga,
     " XMCD measurement of γ'-Fe₄N thin films on LAO(001) and MgO(001) substrates by molecular beam epitaxy, "
     IEEE International Magnetics Conference 2011, April 26, 2011, Taipei, Taiwan.
359. (Oral) Muhammad Ajmal Khan, T. Saito, M. Takeishi, and T. Suemasu,
     " Cu-doped BaSi₂ films on Si (111) substrate by molecular beam epitaxy and evaluation & qualification of depth profiles of Cu atoms for the formation of efficient solar cells, "
     8th International Bhurban Conference on Applied Sciences & Technology, OP-22, Jan. 12, 2011, Islamabad, Pakistan.

FY 2010

360. (invited) H. Akinaga, H. Shima, K. Sadakuni-Makabe, K. Harada, K. Ito, and T. Suemasu,
     " Spintronic materials and the application to Si-based devices, "
     International Conference of AUMS (Asian Union of Magnetics Societies), December 5-8, Jeju, Korea.
361. (invited) N. Usami, Mina Jung, and T. Suemasu,
     " On the control mechanism of microstructures in polycrystalline Si thin film by Al-induced layer exchange process, "
     Malaysia-Japan Joint Workshop, November 12, Malaysia.
362. H. Lee, K. Ito, and T. Suemasu,
     " Toward the epitaxial growth of ferromagnetic γ^'-Fe₄N on Si(001) substrates by molecular beam epitaxy, "
     Presented at the APAC Silicide 2010, July 25, 25-P6, Tsukuba, Japan.
363. K. Toh, T. Saito, A. Okada, M. Ajmal Khan, N. Usami, and T. Suemasu,
     " Fabrication of BaSi₂ films on transparent CaF₂(111) substrates by molecular beam epitaxy for optical characterization, "
     Presented at the APAC Silicide 2010, July 25, 25-P26, Tsukuba, Japan.
364. A. Okada, R. Sasaki, Y. Matsumoto, M. Takeishi, T. Saito, K. Toh, 1N. Usami, and T. Suemasu,
     " Formation of poly-Si layers on AZO/SiO₂ substrates and anti-reflection coating with AZO films for BaSi₂ solar cells, "
     Presented at the APAC Silicide 2010, July 25, 25-P25, Tsukuba, Japan.
365. M. Takeishi, Y. Matsumoto, R. Sasaki, T. Saito, and T. Suemasu,
     " Growth of Al-doped p-type BaSi₂ films by molecular beam epitaxy and the effect of high-temperature annealing on their electrical properties, "
     Presented at the APAC Silicide 2010, July 25, 25-P24, Tsukuba, Japan.
366. H. Kawakami, M. Suzuno, K. Akutsu, J. Chen, Y. Fuxing, T. Sekiguchi, and T. Suemasu,
     " Molecular beam epitaxy of β-FeSi₂ films on Si(111) substrates and its influence on minority-carrier diffusion length of Si measured by EBIC, "
     Presented at the APAC Silicide 2010, July 24, 24-P18, Tsukuba, Japan.
367. K. Akutsu, M. Suzuno, H. Kawakami, and T. Suemasu,
     " Reduction of carrier concentrations of β-FeSi₂ films by atomic hydrogen-assisted molecular beam epitaxy, "
     Presented at the APAC Silicide 2010, July 24, 24-P16, Tsukuba, Japan.
368. K. Harada, K. Sadakuni-Makabe, and T. Suemasu,
     " Magnetoresistance characteristics of Fe₃Si/CaF₂/Fe₃Si heterostructures grown on Si(111) by molecular beam epitaxy,"
     Ppresented at the APAC Silicide 2010, July 25, 25-P2, Tsukuba, Japan.
369. M. Ajmal Khan, M. Takeishi, Y. Matsumoto, T. Saito, and T. Suemasu,
     " Al- and Cu-doped BaSi₂ films on Si (111) substrate by Molecular Beam Epitaxy and Evaluation of Depth Profiles of Al and Cu atoms, "
     Presented at the APAC Silicide 2010, July 25, 25-P23, Tsukuba, Japan.
370. (Oral) T. Saito, K. Toh, A. Okada, and T. Suemasu,
     " Photoresponse properties of BaSi₂ epitaxial films grown on the tunnel junction for high-efficiency thin-film solar cells,"
     Presented at the APAC Silicide 2010, July 26, 26-AM-VI-3, Tsukuba, Japan.
371. (Oral) M. Suzuno, K. Akutsu, H. Kawakami, K. Akiyama, and T. Suemasu,
     " Metalorganic Chemical Vapor Deposition of β-FeSi₂ on β-FeSi₂ Seed Crystals formed on Si substrates,"
     Presented at the APAC Silicide 2010, July 26, 26-AM-VI-5, Tsukuba, Japan.
372. K. Sadakuni-Makabe, M. Suzuno, K. Harada, H. Akinaga, and T. Suemasu,
     " Fabrication of Fe₃Si/CaF₂ Heterostructures Ferromagnetic Resonant Tunneling Diode by Selected-Area Molecular Beam Epitaxy,"
     Presented at the APAC Silicide 2010, July 25, 25-AM-IV-3, Tsukuba, Japan.
373. (invited) T. Suemasu, .......
     " Toward Si-based high-efficiency thin-film solar cells using semiconducting BaSi₂,"
     2010 Asia-Pacific Workshop on Fundamentals and Applications of Advanced Semiconductor Devices, June 30-July 2, Tokyo, Japan, 2010.
374. (Oral) N. Usami, T. Saito, A. Nomura, T. Shishido, and T. Suemasu,
     " Evaluation of minority carrier lifetime in BaSi₂ as a novel material for earth-abundant high efficiency thin film solar cells , "
     Presented at the 35th IEEE Photovoltaic Specialists Conference, June 23, 2010, Hawai, USA.
375. T. Saito, Y. Matsumoto, T. Suemasu, and N. Usami
     " Photoresponse properties of BaSi₂ films grown on n⁺-BaSi₂/p⁺-Si tunnel juntion for high efficiency thin film solar cells , "
     Presented at the 35th IEEE Photovoltaic Specialists Conference, June 23, 2010, Hawai, USA..
376. K. Harada, K. M. Sadakuni, M. Suzuno, H. Akinaga, and T. Suemaus,
     " Room temperature magnetoresistance in Fe₃Si/CaF₂/Fe₃Si MTJ epitaxially grown on Si(111), "
     Presented at the International Symposium on Advanced Magnetic Materials and Applications 2010, July 13, PE-11, Sendai, Japan.
377. K. Ito, G. H. Lee, and T. Suemasu,
     " Epitaxial growth of ferromagnetic Fe₄N thin films on SrTiO3(001) substrates by molecular beam epitaxy, "
     Presented at the International Symposium on Advanced Magnetic Materials and Applications 2010, July 16, SA-12, Sendai, Japan.
378. K. Sadakuni-Makabe, M. Suzuno, K. Harada, H. Akinaga, and T. Suemasu,
     " CaF₂/Fe₃/CaF₂ heterostructures resonant tunneling diodes on Si(111) by selected-area molecular beam epitaxy "
     Presented at the International Symposium on Advanced Magnetic Materials and Applications 2010, July 16, SB-04, Sendai, Japan.
379. K. Sadakuni-Makebe, M. Suzuno, K. Harada, H. Akinaga, and T. Suemasu,
     " Ferromagnetic Resonant Tunneling Diode with a CaF₂/Fe₃/CaF₂ Quantum Well by Local-Area Molecular Beam Epitaxy "
     Presented at the 6th International Conference on the Physics and Applications of Spin Related Phenomena in Semiconductors 2010, August 3, P2-49, Tokyo, Japan.
380. M. Suzuno, K. Akutsu, H. Kawakami, and T. Suemasu,
     " Reduction of residual carrier concentrations in undoped β-FeSi₂ films by atomic hydrogen-assisted molecular beam epitaxy, "
     Presented at the International Conference on Nanophotonics 2010, June 1, P-B82, Tsukuba, Japan.
381. (Oral) T. Saito, Y. Matsumoto, M. Takeishi, R. Sasaki, and T. Suemasu,
     " Photoresponse properties of semiconducting BaSi₂ epitaxial films grown on the tunnel juntion for photovoltaic applications, "
     Presented at the International Conference on Nanophotonics 2010, June 3, O-58, Tsukuba, Japan.

FY 2009

382. (Oral) N. Usami, D. Tsukada, Y. Matsumoto, A. Nomura, T. Shishido, and T. Suemasu,
     " Impact of growth temperature on microstructures in polycrystalline Si thin film grown by Al-induced layer exchange process, "
     19th international photovoltaic scientific engineering conference and exhibition, NMD6-05, Jeju, Korea, Nov.12, 2009.
383. (Oral) M. Suzuno, T. Koizumi, H. Kawakami and T. Suemasu,
     " Enhanced Room-Temperature 1.6μm Electroluminescence from Si-Based Double Heterostructures Light-Emitting Diodes Using Iron Disilicide, "
     2009 International Conferenfce on Solid State Devices and Materials, I-2-3, Sendai, October 7, 2009.
384. (Oral) Y. Matsumoto, D. Tsukada, R. Sasaki, M. Takeishi, T. Saito and T. Suemasu,
     " Epitaxial Growth and Photoresponse Properties of BaSi₂ Layers toward Si-Based High-Efficiency Solar Cells, "
     2009 International Conferenfce on Solid State Devices and Materials, H-8-3, Sendai, October 9, 2009.
385. K. Ito, A. Narahara, H. Akinaga and T. Suemasu,
     " Molecular beam epitaxy and magnetoresistance in Fe₄N/MgO/Fe₄N magnetic tunnel junction,"
     The 18th International Conference on Electronic Properties of Two-Dimensional Systems, Mo-eP82, Kobe, July 20, 2009.
386. K. Sadakuni, T. Harianto, H. Akinaga and T. Suemasu,
     " Fabrication of Fe₃Si/CaF₂/Fe₃Si ferromagnetic resonant tunneling diodes on Si(111) by molecular beam epitaxy,"
     The 18th International Conference on Electronic Properties of Two-Dimensional Systems, Tu-eP30, Kobe, July 21, 2009.

FY 2008

387. (Oral) M. Suzuno, S. Murase, T. Koizumi, and T. Suemasu,
     " 0.1mW p-Si/β-FeSi₂/n-Si double heterostructures light-emitting diodes operating at 1.6μm at room temperature,"
     66th Device Research Conference, VII.B-5, University of California, Santa Barbara, CA, June 25, 2008.
388. (invited) H. Akinaga, F. Takano, H. Shima and T. Suemasu,
     " Spin and Functional-Oxide Electronics as Beyond CMOS Candidates,"
     Moscow International Symposium on Magnetism, Moscow, 21TM-C-7, June 21, 2008.
389. (invited) Y. Ichikawa, M. Kobayashi, D. Tsukada, Y. Matsumoto, M. Sasase and T. Suemasu,
     " Epitaxial growth of semiconducting BaSrSi₂ on Si(111) and hybrid structures with CoSi₂ for photovoltaic application,"
     4th Asian Conference on Crystal Growth and Crystal Techonology (CGCT-4), Sendai, May 24, 2008.

FY 2007

390. (Oral) T. Suemasu, S. Murase, T. Ootsuka, M. Suzuno, K. Morita,
     " Si-Based Environmentally Friendly Semiconductors for Future Electronic and Photonic Devices,"
     3rd International Conference on EcoElectronics,Nanjing, Oct. 25, 2007.
391. (Oral) Y. Ichikawa, M. Kobayashi and T. Suemasu,
     " Molecular beam epitaxy of semiconductor(BaSi₂)/metal(CoSi₂) hybrid structures on Si(111) substrates for photovoltaic application,"
     9th International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures, 13Ap2-2,Tokyo, Nov.13, 2007.
392. M. Kaneko, T. Suemasu, Y. Adachi, K.Kinoshita and S. Yoda,
     " Investigation on Single Crystallization Mechanims in InGaAs Bulk Crystal Growth by the Traveling Liquidus-Zone Method,"
     3rd International Symposium on Physical Sciences in Space, MP-36, Nara, Japan, Oct 23, 2007.
393. (Oral) Shigemitsu Murase, Yuta Ugajin, Mitsushi Suzuno and Takashi Suemasu,
     " Luminescence Characterization and Room-Temperature 1.6μm Electroluminescence in Si/β-FeSi₂/Si Double Heterostructures on Si(001) by Molecular Beam Epitaxye,"
     4th International Conference on Group IV Photonics, FB4, Tokyo, Sept 21, 2007.
394. Mitsushi Suzuno, Yuta Ugajin, Shigemitsu Murase and Takashi Suemasu,
     " Enhanced Hole Mobility in p-type β-FeSi₂ Films Grown by Molecular Beam Epitaxy Using High-Purity Fe Source,"
     4th International Conference on Group IV Photonics, WP17, Tokyo, Sept 19, 2007.
395. (invited) Takashi Suemasu, Shigemitsu Murase, Y. Ugajin and Mitsushi Suzuno,
     " Si-based Infrared Light-Emitters Using Semiconducting Iron Silicide,"
     2007 International Conference on Solid State Devices and Materials, Tsukuba, C-1-1, Sept 19, 2007.
396. (invited) Takashi Suemasu, Yuta Ugajin, Kosuke Morita, Shigemitsu Murase, Mitsushi Suzuno, Yoshitake Ichikawa, Michitaka Kobayashi,
     " Semiconducting silicide photonic devices,"
     "Active and Passive Optical Components for Communications VII"-in SPIE Optics East 2007, 6775-19, Boston, USA, Sept 12, 2007.

FY 2006

397. (invited) T. Suemasu, T. Sunohara, Y. Ugajin, K. Kobayashi and S. Murase,
     " Growth and luminescence characterization of Si-based double heterostructures light-emitting diodes with iron disilicide active region,"
     2006 Materials Research Society Fall Meeting, Group IV Semiconductor Nanostructures L1.4, Boston, USA, Nov 27, 2006.
398. K. Akiyama, T. Kiguchi, T. Suemasu, T. Kimura and H. Funakubo,
     " Crystal growth of β-FeSi₂ on (100), (110) and (111) plane of Si and yittria-stabilized zirconia substrates, "
     2006 Materials Research Society Fall Meeting, Group IV Semiconductor Nanostructures, Boston, USA, Nov 27, 2006.
399. T. Suemasu, K. Morita and M. Kobayashi,
     "Molecular beam epitaxy of band-gap-tunable ternary semiconducting silicide Ba_1-xSr_xSi₂ for photovoltaic application,"
     the Fourteenth International Conference on Molecular Beam Epitaxy (MBE-2006), MoP-41, Tokyo, Sept.4, 2006.
400. K. Yamaguchi, T. Yui, K. Yamaki, I. Kakeya, K. Kadowaki and T. Suemasu,
     " Epitaxial Growth of Ferromagnetic Fe₃N Films on Si (111) substrates by Molecular Beam Epitaxy,"
     the Fourteenth International Conference on Molecular Beam Epitaxy (MBE-2006), TuP-35, Tokyo, Sept.5, 2006.
401. (Oral) S. Murase, T. Sunohara and T. Suemasu,
     "Epitaxial growth and luminescence characterization of Si/β-FeSi₂/Si multilayered structures by molecular beam epitaxy,"
     the Fourteenth International Conference on Molecular Beam Epitaxy (MBE-2006), MoB-31, Tokyo, Sept.4, 2006.
402. T. Wakayama, T. Suemasu, T. Kanazawa and H. Akinaga,
     " Reactive ion etching of β-FeSi₂ film in inductively coupled plasma, "
     APAC-SILICIDE 2006 (Asia-Pacific Conference on Semiconducting Silicides Science and Technology Towards Sustainable Optoelectronics), Kyoto, F-3, July 31, 2006.
403. (Oral) K. Morita, M. Kobayashi and T. Suemasu,
     " Effect of Sr addition on the crystallinity and optical absorption edges in ternary semiconducting silicide Ba_1-xSr_xSi₂, "
     APAC-SILICIDE 2006 (Asia-Pacific Conference on Semiconducting Silicides Science and Technology Towards Sustainable Optoelectronics), Kyoto, C-5, July 30, 2006.
404. (Oral) Y. Ugajin, T. Sunohara and T. Suemasu,
     " Investigation of current injection in β-FeSi₂/Sidouble-heterostructures light-emitting diodes by molecular beam epitaxy,"
     APAC-SILICIDE 2006 (Asia-Pacific Conference on Semiconducting Silicides Science and Technology Towards Sustainable Optoelectronics), Kyoto, B-4, July 29, 2006.
405. (Oral) K. Kobayashi, T. Suemasu, N. Kuwano, D. Hara and H. Akinaga,
     " Epitaxial growth of Fe₃Si/CaF₂/Fe₃Si magnetic tunnel junction structures on CaF₂/Si(111) by molecular beam epitaxy,"
     APAC-SILICIDE 2006 (Asia-Pacific Conference on Semiconducting Silicides Science and Technology Towards Sustainable Optoelectronics), Kyoto, E-2, July 31, 2006.
406. M. Kobayashi, K. Morita and T. Suemasu,
     "Growth and characterization of group-III impurity-doped semiconducting BaSi₂ films grown by molecular beam epitaxy, "
     APAC-SILICIDE 2006 (Asia-Pacific Conference on Semiconducting Silicides Science and Technology Towards Sustainable Optoelectronics), P-33, Kyoto, July 30, 2006.

FY 2005

407. (Oral) T. Sunohara, K. Kobayashi, M. Takauji and T. Suemasu,
     "Epitaxial growth of light-emitting Si/β-FeSi2/Si double-heterostructures on Si(001) substrates by molecular beam epitaxy,"
     The 4th international conference of Si epitaxy and heterostructures, 23P1-52, Awaji, Japan, May 23, 2005.
408. K. Kobayashi, T. Sunohara, M. Umada, H. Yanagihara, E. Kita and T. Suemasu,
     "Epitaxial growth of Fe₃Si/CaF₂/Si(111) hybrid structures by molecular beam epitaxy,"
     The 4th international conference of Si epitaxy and heterostructures, 24F-4, Awaji, Japan, May 24, 2005.
409. K. Morita, Y. Inomata and T. Suemasu,
     "Optical and electrical properties of semiconducting BaSi₂ thin films on Si substrates grown by molecular beam epitaxy,"
     The 4th international conference of Si epitaxy and heterostructures, 25P2-47, Awaji, Japan, May 25, 2005.
410. Y. Ugajin, M. Takauji and T. Suemasu,
     "Annealing temperature dependence of EL properties of Si/β-FeSi₂/Si(111) double-heterostructures light-emitting diodes,"
     The 4th international conference of Si epitaxy and heterostructures, 25P2-48, Awaji, Japan, May 25, 2005.

FY 2004

411. (Oral) T.Suemasu, T.Sunohara, M.Takauji, C.Li and F.Hasegawa,
     "Growth and Characterization of Si-Based Light-Emitting Diode with β-FeSi2 Active Region by Molecular Beam Epitaxy,"
     1st International Conference on Group IV Photonics, Hong Kong, Sept.29, 2004, WA2.
412. (invited) M. Takauji, T. Suemasu and F. Hasegawa,
     "Fabrication of p-Si/β-FeSi2/n-Si Double-Heterostructure Light-Emitting Diode by Molecular Beam Epitaxy,"
     The International Conference on Solid State Devices and Materials (SSDM), Tokyo, Sept.17, 2004, D-9-1.
413. T. Sunohara, C. Li, Y. Ozawa, T. Suemasu and F. Hasegawa,
     "Growth and Characterization of Si-Based Light-Emitting Diode with β-FeSi2-Particles/Si Multilayered Active Region by Molecular Beam Epitaxy,"
     The International Conference on Solid State Devices and Materials (SSDM), Tokyo, Sept.17, 2004, D-9-2.
414. (Oral) K.Yamaguchi, H.Tomioka, T.Yui,T.Suemasu, K.Ando, R.Yoshizaki and F.Hasegwa,
     "Cr concentration dependence of magnetic and electrical properties of Cr-doped GaN films on Si(111) by MOMBE,"
     the Internationla Workshop on Nitride Semiconductors, USA, Pittsburgh, July 19, 2004, B1.3.
415. (Oral) T.Suemasu, K.Yamaguchi, H.Tomioka, R.Yoshizaki and F.Hasegwa,
     "Ferromagnetic to paramagnetic transition in Cr-doped GaN film on Si(111) by metal organic molecular beam epitaxy,"
     The 5th International Symposium on Blue Laser and Light Emitting Diodes (ISBLLED-2004),Gyeongju, Korea on March 17, 2004, B5-5.
416. M.Suzuki, T.Sato, T.Suemasu and F.Hasegawa,
     "Tolerance of GaAs as an original substrate for HVPE growth of free standing GaN,"
     The 5th International Symposium on Blue Laser and Light Emitting Diodes (ISBLLED-2004),Gyeongju, Korea on March 17, 2004, A5-5.

FY 2003

417. (invited) F.Hasegawa and T.Suemasu
     "A first real Si based LED using β-FeSi2 as the active region,"
     Taiwan-Japan Optoelectronics Workshop, Tainan, Taiwan, Nov.20 (2003).
418. (invited) T.Suemasu and F.Hasegawa
     "Epitaxial growth of semiconducting β-FeSi2 on Si substrates and its application to light-emitting diodes,"
     IUMRS-ICAM2003, Symposium C-7, Yokohama, Oct.13 (2003).
419. Y.Ozawa, T.Ohtsuka, Cheng Li, T.Suemasu and F.Hasegawa,
     "Growth Condition Dependence of 1.5 μm photoluminescence from β-FeSi2 particles embedded in Si by molecular beam epitaxy,"
     IUMRS-ICAM2003, Symposium C-7, Yokohama, Oct.13 (2003).
420. Cheng Li, T.Ohtsuka, Y.Ozawa, T.Suemasu and F.Hasegawa,
     "Temperature dependence of electroluminescence of Si-based LEDs with β-FeSi2 particles active region,"
     IUMRS-ICAM2003, Symposium C-7, Yokohama, Oct.13 (2003).
421. Y.Inomata, T.Nakamura, T.Suemasu and F.Hasegawa,
     "Epitaxial growth of semiconducting BaSi2 thin films on Si(111) substrates by reactive deposition epitaxy,"
     IUMRS-ICAM2003, Symposium C-7, Yokohama, Oct.13 (2003).
422. (invited) T.Suemasu and F.Hasegawa
     "Crystal growth of Iron silicide on Si substrates and its application to optical devices,"
     JSPS colloquium, Photonics- The technology for the 21st Century, Royal Institute of Technology, Stockholm, Sweeden, June 2 (2003).
423. K.Yamaguchi, H.Tomioka, T.Sato, R.Souda, T.Suemasu and F.Hasegawa,
     "Polarity of MBE GaN/AlN/Si(111); dependence on AlN thickness and nitrogen source,"
     5th int.conf. Nitride semiconductors, Th-P3.021 (2003) May 29, Nara, Japan.
424. M.Suzuki, T.Sato, K.Yamaguchi, C.Miyamoto, T.Suemasu and F.Hasegawal
     "quot;Formation of Ga1-xSixNy/metal Ga/Si layers during HVPE growth of thick GaN on MBE GaN/AlN/Si(111) wafers,"
     5th int.conf. Nitride semiconductors, Mo-A1.8 (2003) May 26, Nara, Japan.
425. T.Suemasu, K.Yamaguchi, H.Tomioka and F.Hasegawa,
     "Room-temperature ferromagnetism in Cr-doped GaN films grown by MOMBE on GaAs(111)A substrates,"
     The 5th int.conf. Nitride semiconductors, Th-P3.032 (2003) May 29, Nara, Japan.
426. N.Seki, K.Takakura, T.Suemasu and F.Hasegawa,
     "Conduction Type and Deep Levels of Undoped β-FeSi2 Films Grown by MBE with Different Si/Fe Ratios,"
     The 1th Int.Symp.on Point Defect and Nonstoichiometry, TO-13 (2003) March 20, Sendai, Japan.

FY 2002

427. (invited) F.Hasegawa and T.Suemasu
     "Formation of semiconducting β-FeSi2 and its application to Si-based LED,"
     4th Japanese-Spanish-German Workshop on Recent Progress in Advanced Materials, Devices, Processing and Characterization, Cordoba, Spain, March 10 (2002).
428. K. Takakura, N. Seki, T. Suemasu, and F. Hasegawa,
     "Comparison of donor and acceptor levels in undoped, high quality β-FeSi2 films grown by MBE and multi-layer method,"
     The 8th IUMRS International Conference on Electronic Materials (IUMRS-ICEM2002), D-45 (2002) June, Xian, China.
429. F.Hasegawa, T.Suemasu, Y.Negishi, T.Ohtsuka, C.Li and K.Takakura,
     "Dependence of Room Temperature 1.6μm EL from a p-Si/β-FeSi2 particles/n-Si LED on the Device Structure and I-V Characteristics,"
     26th Int.Conf.of Physics of Semiconductors, July 29 (2002) D248, Edinburgh, UK.
430. T.Suemasu, Y.Negishi, T.Ohtsuka, Y.Ozawa, K.Takakura and F.Hasegawa,
     "Optimum size of beta-FeSi2 particles on the 1.5 μm light emission from Si/ beta-FeSi2 particles/Si structures,"
     26th Int.Conf.of Physics of Semiconductors, July 30 (2002) H59, Edinburgh, UK.

FY 2001

431. O.Takahashi, M.Namerikawa, H.Tanaka, R.Souda, T.Suemasu and F.Hasegawa,
     "Polarity of hexagonal GaN grown on GaAs(111)A and (111)B surfaces by HVPE and MOVPE,"
     Mat. Res.Soc. Symp. Proc. Vol.639 (2001) G11.8.1.

FY 2000

432. R.Teranishi, J.Oinuma, Y.Mori, K.Takarabe, S.Chichibu, T.Suemasu, Y.Ikura and F.Hasegawa,
     "Optical Propertiy of β-FeSi2 under,"
     9th Int.Conf.High Pressure Semicon. Physics , 2000.
433. (Oral) K.Takakura, T.Suemasu, Y.Ikura and F.Hasegawa,
     "Growth of High Mobility β-FeSi2 Films and Control of its Conduction Type by Si/Fe Ratios,"
     42nd Electronic Materials Conference, K5, Denver, USA, June 21, 2000.
434. (Oral) T.Suemasu, Y.Ikura, Y.Negishi, K.Takakura and F.Hasegawa,
     "Growth Temperature Dependence of 1.5 μm Photoluminescence from beta-FeSi2 Balls in Si and Realization of Electroluminescence Nearly at Room Temperature,"
     42nd Electronic Materials Conference, N5, Denver, USA, June 22, 2000.

FY 1999

435. K.Takakura, T.Suemasu and F.Hasegawa,
     "Growth of Mn Doped Epitaxial β-FeSi2 Films on Si(001) Substrates by Reactive Deposition Epitaxy,"
     Int.Joint Conf.on Silicon Epitaxy and Heterostructures, Zao, Japan, Sept.12-17, 1999.
436. T.Suemasu, Y.Iikura, K.Takakura, N.Hiroi and F.Hasegawa,
     "Optimum annealing condition for 1.5μm photoluminescence form reactive depositon epitaxy beta-FeSi2 balls embedded in Si crystals,"
     Int.Conf.on Luminescence and Opitcal Spectroscopy of Condensed Matter, Osaka, Japan, Aug.25, 1999.
437. (Oral) T.Suemasu, M.Sakai and F.Hasegawa,
     "Optimum thermal-cleaning condition of GaAs surface with a superior arsenic source: Trisdimethylamino-arsine,"
     7th Int.Conf.on Chemical Beam Epitaxy and Related Growth Techniques, Tsukuba, Japan, July 27-30, 1999.

FY 1998

438. S.Yonemura, M.Sakai, H.Tsuchiya, T,Suemasu and F.Hasegawa,
     "Estimation of Hexagonal GaN Included in Nominally Cubic GaN by w Scan XRD Method: Comparison with the Pole Figure Method for GaN Layers Grown with Different Growth Methods and Conditions,"
     2nd Int.Symp. on Blue Laser and Light Emitting Diodes, Kisarazu, Chiba, Japan, Sept.29-Oct.2, 1998.
439. K.Sunaba, H.Tsuchiya, M.Minami, T.Suemasu and F.Hasegawa,
     "Influence of As Autodoping and Oxygen Contamination on the Growth and Photoluminescence Properties of Halide VPE Grown Thick Cubic GaN,"
     2nd Int.Symp. on Blue Laser and Light Emitting Diodes, Kisarazu, Chiba, Japan, Sept.29-Oct.2, 1998.
440. F.Hasegawa, Harutoshi Tsuchiya, Kenji Sunaba and T.Suemasu,
     "Growth of High Quality Cubic GaN on (001) GaAs by Halide VPE with Back Side Buffer,"
     Korea 1998.
441. (Oral) T.Suemasu, K.Takakura, M.Tanaka, T.Fujii and F.Hasegawa,
     "Fabrication of p-Si/β-FeSi2 ball/n-Si Structures by MBE and Their Electrical and Optical Properties,"
     European Materials Research Society Symposium, B-VIII.3, Strasburg, June 16-19, France 1998.

FY 1997

442. H.Tsuchiya, K.Sunaba, S.Yonemura, T.Suemasu and F.Hasegawa,
     "Surface Preparation and Growth Condition Dependence of Cubic Layer on (001) GaAs by Hydride Vapor Phase Epitaxy,"
     Mat. Res. Symp. Proc. Vol.468 (1997) 63-67.

FY 1996

443. M.Tanaka, Y.Kumagai, T.Suemasu and F.Hasegawa,
     "Reactive deposition epitaxial growth β-FeSi2 layers on Si(001),"
     Record of Second International Symposimu on the Control of Semiconductor Interfaces, 303, Karuizawa, Oct.28-Nov.1, 1996.