論文

• Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI. Carrier Concentration Profiling in Highly Efficient CdTe Thin Film Solar Cells by Capacitance-Voltage Measurement, 16th European Photovoltaic Solar Energy Conference and Exhibition, May 1-5, 2000, Glasgow, UK, 2000.
• Uwe Welner JAHN, Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI. A Cathodoluminescence Study of Highly Efficient CdTe/CdS Solar Cells, 6th International Workshop on Beam Injection Assessment of Microstructures in Semiconductors, November 12-16, 2000, Fukuoka, Japan, 2000.
• Akira YAMADA, Tamotsu OKAMOTO, Nowshad AMIN, Shinji KITAMOTO, Makoto KONAGAI. Characterization and Fabrication of Highly Efficient CdTe Thin-Film Solar Cells, 3rd Korea-Japan Joint Seminar on Photovoltaics, October 30-31, 2000, Pusan, Korea, pp. 229-235, 2000.
• Tamotsu OKAMOTO, Shinji KITAMOTO, Akira YAMADA, Makoto KONAGAI. Stoichiometry Control of CdTe Thin Film Solar Cells by Close-Spaced Sublimation, 28th IEEE Photovoltaic Specialists Conference, September 15-22, 2000, Anchorage, AK, USA, 2000.
• Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI. Optical and Electrical Characterizations of Highly Efficient CdTe Thin Film Solar Cells, International Conference on Electronic Materials & European Materials Research Society Spring Meeting 2000, May 30 - June 2, 2000, Strasbourg, France, 2000.
• Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI. Characterization of Highly Efficient CdTe Thin Film Solar Cells by the Capacitance-Voltage Profiling Technique, Japanese Journal of Applied Physics, Vol. 39, No. 5A, pp. 2587-2588, 2000.
• Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI. Optical and Electrical Characterizations of Highly Efficient CdTe Thin Film Solar Cells Prepared by Close-Spaced Sublimation, Journal of Crystal Growth, Vol. 214/215, pp. 1148-1151, 2000.
• Tomohiko OHTSUKA, Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI. Photoluminescence Study of -In₂Se₃ Epitaxial Films Grown by Molecular Beam Epitaxy, Journal of Luminescence, Vol. 87-89, pp. 293-295, 2000.
• Nowshad AMIN, Takayuki ISAKA, Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI. Prospects of Thickness Reduction of the CdTe Layer in Highly Efficient CdTe Solar Cells Toward 1 um, Japanese Journal of Applied Physics, Vol. 38, No. 8, pp. 4666-4672, 1999.
• Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI. Optical and Electrical Characterizations of Highly Efficient CdTe Thin Film Solar Cells Prepared by Close-Spaced Sublimation, 9th International Conference on II-VI Compounds, November 1-5, 1999, Kyoto, Japan., pp. 30, 1999.
• Tamotsu OKAMOTO, Yoshinori HARADA, Akira YAMADA, Makoto KONAGAI. Improved Performance of CdTe Thin Film Solar Cells through Controlling the Initial Stage of the CdTe Layer Deposition by Close-Spaced Sublimation, 11th International Photovoltaic Science and Engineering Conference, September 20-24, 1999, Hokkaido, Japan, pp. 947-948, 1999.
• Tomohiko OHTSUKA, Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI. Molecular Beam Epitaxy and Characterization of Layered In₂Se₃ Films Grown on Slightly Misoriented (001)GaAs Substrates, Japanese Journal of Applied Physics, Vol. 38, No. 2A, pp. 668-673, 1999.
• Tamotsu OKAMOTO, Yuichi MATSUZAKI, Nowshad AMIN, Akira YAMADA, Makoto KONAGAI. Characterization of Highly Efficient CdTe Thin Film Solar Cells by Low-Temperature Photoluminescence, Japanese Journal of Applied Physics, Vol. 37, No. 7, pp. 3894-3899, 1998.
• Maman BUDIMAN, Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI. Heteroepitaxy and Multi Quantum Well Structure of Layered Compound GaSe/GaS_xSe_1-x on (001)GaAs Substrate, Japanese Journal of Applied Physics, Vol. 37, No. 10, pp. 5497-5499, 1998.
• Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI. Growth and Characterization of In₂Se₃ Epitaxial Films by Molecular Beam Epitaxy, Journal of Crystal Growth, Vol. 175,176, pp. 1045-1050, 1997.
• Yasutoshi OHTAKE, Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI, Koki SAITO. Improved Performance of Cu(InGa)Se₂ Thin-Film Solar Cells Using Evaporated Cd Free Buffer Layers, Solar Energy Materials and Solar Cells, Vol. 49, pp. 269-275, 1997.
• Maman BUDIMAN, Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI. Epitaxial Growth and Characterization of GaS_xSe_1-x Layered Compound Semiconductor by Molecular Beam Epitaxy, Applied Surface Science, Vol. 117,118, pp. 518-522, 1997.
• Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI. Growth and Characterization of Zn Ga₂Se₄ Epitaxial Films by Exchange Reaction between Zn and Ga Atoms in ZnSe Layer, Crystal Research and Technology, Vol. 31, pp. 345-348, 1996.
• Tamotsu OKAMOTO, Tsuyoshi TAKEGAMI, Akira YAMADA, Makoto KONAGAI. Control of the Arrangement of the native gallium vacancies Ga₂Se₃ on (100)GaAs by molecular beam epitaxy, Japanese Journal of Applied Physics, Vol. 34, No. 11, pp. 5984-5988, 1995.
• Tamotsu OKAMOTO, Toshihiko MIYASHITA, Akira YAMADA, Makoto KONAGAI, Kiyoshi TAKAHASHI. Formation of ZnGa₂Se₄ Epitaxial Layer during Molecular Beam Epitaxial Growth of Ga₂Se₃ on ZnSe, Japanese Journal of Applied Physics, Vol. 33, No. 8A, pp. L1059-L1062, 1994.
• Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI, Kiyoshi TAKAHASHI. Polarized Photoluminescence in Vacancy-Ordered Ga₂Se₃, Journal of Crystal Growth, Vol. 138, pp. 204-207, 1994.
• Hideki TOJIMA, Tamotsu OKAMOTO, Akira YAMADA, Makoto KONAGAI, Kiyoshi TAKAHASHI. Nitrogen Doping into ZnSe by the Catalysis of Transition Metal, Journal of Crystal Growth, Vol. 138, pp. 408-411, 1994.
• Tamotsu OKAMOTO, Makoto KONAGAI, Nobuaki KOJIMA, Akira YAMADA, Kiyoshi TAKAHASHI, Yoshio NAKAMURA, Osamu NITTONO. Anomalous Anisotropy in the Absorption Coefficient of Vacancy-ordered Ga₂Se₃, Journal of Electronic Materials, Vol. 22, No. 2, pp. 229-232, 1993.
• Nobuaki KOJIMA, Akira YAMADA, Kiyoshi TAKAHASHI, Tamotsu OKAMOTO, Makoto KONAGAI, Koki SAITO. Photoinduced Oxidation of Epitaxial Ga₂Se₃ Grown by Molecular Beam Epitaxy, Japanese Journal of Applied Physics, Vol. 32, No. 7A, pp. L887-L889, 1993.
• Akihiko YOSHIKAWA, Tamotsu OKAMOTO. On the mechanism of growth-rate enhancement by photocatalysis in metalorganic vapor phase epitaxy of ZnSe, Journal of Crystal Growth, Vol. 117, pp. 107-110, 1992.
• Akira YAMADA, Nobuaki KOJIMA, Kiyoshi TAKAHASHI, Tamotsu OKAMOTO, Makoto KONAGAI. Raman Study of Epitaxial Ga₂Se₃ Films Grown by Molecular Beam Epitaxy, Japanese Journal of Applied Physics, Vol. 31, No. 2B, pp. L186-L188, 1992.
• Tamotsu OKAMOTO, Nobuaki KOJIMA, Akira YAMADA, Makoto KONAGAI, Kiyoshi TAKAHASHI, Yoshio NAKAMURA, Osamu NITTONO. Optical Anistropy of Vacancy-Ordered Ga₂Se₃ Grown by Molecular Beam Epitaxy, Japanese Journal of Applied Physics, Vol. 31, No. 2B, pp. L143-L144, 1992.
• Tamotsu OKAMOTO, Akihiko YOSHIKAWA. Effects of Substrate Materials and Their Properties on Photoassisted Metalorganic Vapor Phase Epitaxy of ZnSe, Japanese Journal of Applied Physics, Vol. 30, No. 2A, pp. L156-L159, 1991.
• Akihiko YOSHIKAWA, Tamotsu OKAMOTO. Ar ion laser irradiation effects on the MOVPE growth of ZnSe using dimethyl Zinc and hydrogen selenide as reactants, Journal of Crystal Growth, Vol. 115, pp. 274-278, 1991.
• Akihiko YOSHIKAWA, Tamotsu OKAMOTO, Tsuyoshi FUJIMOTO. Effects of Ar ion laser irradiation on MOVPE of ZnSe using DMZn and DMSe as reactants, Journal of Crystal Growth, Vol. 107, pp. 653-658, 1991.
• Akihiko YOSHIKAWA, Tamotsu OKAMOTO, Tsuyoshi FUJIMOTO, Kozo ONOUE, Shigeki YAMAGA, Haruo KASAI. Ar Ion Laser-Assisted MOVPE of ZnSe Using DMZn and DMSe as Reactants, Japanese Journal of Applied Physics, Vol. 29, No. 2, pp. L225-L228, 1990.

国際会議発表 (査読有り)

• Yuya Masuda, Yuki Takiguchi, Yuzuru Ueda, Aikyou Hosono, Tamotsu Okamoto, Makoto Konagai. Outdoor characterization of InGaP and GaAs solar cells using the optical wavelength splitter, The 6th World Conference on Photovoltaic Energy Conversion, 8WePo.8.11, 2014.

国内会議発表 (査読有り)

• 江川健太郎, 宮島晋介, 岡本 保, 山田 明, 小長井誠. a-Si:H/CdTe 4端子タンデム太陽電池の作製のための基礎検討, 2009年秋季 第70回応用物理学会学術講演会, Sept. 2009.

学位論文

• Study of III-VI Compound Semiconductors Grown by Molecular Beam Epitaxy,  本文,  Doctor of Engineering,  東京工業大学,  1997/--/--, 
• 光MOVPEによるZnSeの成長,  Master of Engineering,  千葉大学,  1991/--/--, 

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