分子科学研究所平本グループ

Publications(1983~2000)

-2000-

• Optical "NOT" Operation in an Organic Film Device Combining OLED and Current Photo-controllable Organic Film Masaaki Yokoyama, Masahiro Hiramoto, Yoshihito Motohashi, and Norio Nagayama, Proceedings of IS&T's NIP16: International Conference on Digital Printing Technologies, Oct. 15-20, Vancouver, B.C., Canada, pp.340-343 (2000).

• Photocurrent Multiplication at Organic/Metal Interface and Surface Morphology of Organic Films Ken-ichi Nakayama, Masahiro Hiramoto, and Masaaki Yokoyama, J. Appl. Phys., 87, 3365-3369 (2000).

• Direct Measurement of Internal Potential Distribution in Organic Electroluminescent Diodes during Operation Masahiro Hiramoto, Keiji Koyama, Ken-ichi Nakayama, and Masaaki Yokoyama, Appl. Phys. Lett., 76, 1336-1338 (2000).

• A High-speed Photocurrent Multiplication Device Based on an Organic Double-layered Structure Ken-ichi Nakayama, Masahiro Hiramoto, and Masaaki Yokoyama, Appl. Phys. Lett., 76, 1194-1196 (2000).

• Numerical Simulations of Photocurrent Multiplication Phenomenon at Organic/Metal Interface Ken-ichi Nakayama, Masahiro Hiramoto, and Masaaki Yokoyama, Proceedings of IS&T's NIP15: International Conference on Digital Printing Technologies, Oct. 17-22, Orlando, Florida, pp.743-746 (1999).

• Direct Tracing of Photocurrent Multiplication Process in Organic Pigment Film Ken-ichi Nakayama, Masahiro Hiramoto, and Masaaki Yokoyama, J. Appl. Phys., 84, 6154-6156 (1998).

• Field-activated Structural Traps at Organic Pigment/Metal Interfaces Causing Photocurrent Multiplication Phenomena Masahiro Hiramoto, Ken-ichi Nakayama, Tadashi Katsume, and Masaaki Yokoyama, Appl. Phys. Lett., 73, 2627-2629 (1998).

• Transient Response of Multiplied Photocurrent Observed in Metal/Organic Pigment Film   Interface Ken-ichi Nakayama, Masahiro Hiramoto, and Masaaki Yokoyama, Proceedings of IS&Tﾕs NIP14: International Conference on Digital Printing Technologies, pp490-493, Toronto, Ontario, Canada, Oct. 18-23 (1998).

• Photocurrent Multiplication at Organic/Metal Interface and Morphology of Metal Films Masahiro Hiramoto, Ichiro Sato, Ken-ichi Nakayama, and Masaaki Yokoyama, Jpn. J. Appl. Phys., 37, L1184-L1186 (1998).

• Photocurrent Multiplication Phenomena at Organic/Metal and Organic/Organic Interfaces Masahiro Hiramoto, Ken-ichi Nakayama, Ichiro Sato, Hiroyuki Kumaoka, and Masaaki Yokoyama, Thin Solid Films, 331, 71-75 (1998).

• Light Amplification and Optical Computation in Organic Multi-layered Photo-electronic System Masahiro Hiramoto (Invited), Proceedings of the First NIMC International Symposium on Photoreaction Control and Photofunctional Materials, pp71-74, Tsukuba, Japan, March 16-18 (1998).

• Photocurrent Multiplication Phenomenon at Organic/Organic Heterojunction Masahiro Hiramoto, Hiroyuki Kumaoka, and Masaaki Yokoyama, Proceedings of IS&Tﾕs NIP13: International Conference on Digital Printing Technologies, pp248-251, Seattle, Nov. 2-7 (1997).

• Photocurrent Multiplication Phenomenon at Organic/Organic Heterojunction and Application to Optical Computing Device Combining with Organic Electroluminescence Masahiro Hiramoto, Hiroyuki Kumaoka, and Masaaki Yokoyama, Synth. Metals, 91, 77-79 (1997).

• Detailed Analysis of Photocurrent Multiplication Phenomenon in Organic Pigment Films Tadashi Katsume, Masahiro Hiramoto, and Masaaki Yokoyama, Proceedings of IS&Tﾕs NIP12: International Conference on Digital Printing Technologies,  pp248-251, San Antonio, Texas, Oct. 27-Nov.1 (1996).

• Patterned Emission in Organic Electroluminescent Device Using Photodecomposition of Polysilane Film by UV Light Masahiro Hiramoto, Yoshimasa Sakata, and Masaaki Yokoyama,　Jpn. J. Appl. Phys., 35, 4809-4812 (1996).

• Photo-induced Hole Injection Multiplication in p-type Quinacridone Pigment Films Masahiro Hiramoto, Shuji Kawase, and Masaaki Yokoyama,　Jpn. J. Appl. Phys., 35, L349-L351 (1996).

• Photocurrent Multiplication in Naphthalene Tetracarboxylic Anhydride Film at Room Temperature Tadashi Katsume, Masahiro Hiramoto, and Masaaki Yokoyama,　Appl. Phys. Lett., 69, 3722-3724 (1996).

• Conduction Type Control from n- to p-Type for Organic Pigment Film Purified by Reactive Sublimation Masahiro Hiramoto, Kiyoaki Ihara, Hiroyuki Fukusumi, and Masaaki Yokoyama, J. Appl. Phys., 78(12), 7153-7157 (1995).

• Fermi Level Shift in Photoconductive Organic Pigment Films Measured by Kelvin Vibrating Capacitor Method Masahiro Hiramoto, Kiyoaki Ihara, and Masaaki Yokoyama, Jpn. J. Appl. Phys., 34(part 1, No. 7B), 3803-3807 (1995).

• Light Amplification Device Using Organic Electroluminescent Diode Coupled with Photoresponsive Organic Pigment Film Tadashi Katsume, Masahiro Hiramoto, and Masaaki Yokoyama, Appl. Phys. Lett., 66(22), 2992-2994 (1995).

• Light Amplification in a New Light Transducer Combining Organic Electroluminescent     Diode with Photoresponsive Organic Pigment Film Masahiro Hiramoto, Tadashi Katsume, and Masaaki Yokoyama, Optical Review, 1 (1), 82-84 (1994).

• High Photon Conversion in a Light Transducer Combining Organic Electroluminescent    Diode with Photoresponsive Organic Pigment Film Tadashi Katsume, Masahiro Hiramoto, and Masaaki Yokoyama, Appl. Phys. Lett., 64(19), 2546-2548 (1994).

• Extrinsic Carrier Photogeneration in Organic Pigments and Electric-field Induced Fluorescence Quenching Masahiro Hiramoto, Yoshitaka Sakaue, and Masaaki Yokoyama, Bull. Chem. Soc. Jpn., 67(8), 2011-2016 (1994).

• Photocurrent Multiplication in Organic Pigment Films Masahiro Hiramoto, Takashi Imahigashi, and Masaaki Yokoyama, Appl. Phys. Lett., 64(2), 187-189 (1994).

• New Light Transducer Using Organic Electroluminescent Diode Combined with Photoresponsive Organic Pigment Film Tadashi Katsume, Masahiro Hiramoto, and Masaaki Yokoyama, Proceedings of the 3rd IUMRS International Conference on Advanced Materials '93, Symposium R (Tokyo, Japan), pp385-388 (1993).

• Photocurrent Multiplication Phenomenon in Organic Pigment Film Masahiro Hiramoto, Takashi Imahigashi, and Masaaki Yokoyama, Proceedings of the 3rd IUMRS International Conference on Advanced Materials '93, Symposium R (Tokyo, Japan), pp315-318 (1993).

• Photocurrent Multiplication in Organic Pigment Films Masahiro Hiramoto, Takashi Imahigashi, and Masaaki Yokoyama, Extended Preprints of IS&T 9th International Congress on Advances in Non-impact Printing Technologies/Japan Hardcopy '93 (Yokohama, Japan), pp 671-674 (1993).

• Directed Beam Emission from Film Edge in Organic Electroluminescent Diode Masahiro Hiramoto, Jun-ichi Tani, and Masaaki Yokoyama, Proceedings of the IS&T/SPIE International Symposium on Electronic Imaging: Science & Technology (San Jose), Proceedings Vol. 1910 Electroluminescence: New Materials and Devices for Displays, pp 190-194 (1993).

• New Light Transducer Using Organic Electroluminescent Diode Combined with   Photoresponsive Amorphous Silicon Carbide Masahiro Hiramoto and Masaaki Yokoyama, Proceedings of the IS&T/SPIE International Symposium on Electronic Imaging: Science &    Technology (San Jose), Proceedings Vol. 1910 Electroluminescence: New Materials and Devices for Displays, pp 222-229 (1993).

• Directed Beam Emission from Film Edge in Organic Electroluminescent Diode Masahiro Hiramoto, Jun-ichi Tani, and Masaaki Yokoyama, Appl. Phys. Lett., 62(7), 666-668 (1993).

• Photocurrent Multiplication in Amorphous Silicon Carbide Films Masahiro Hiramoto, Kanji Yoshimura, and Masaaki Yokoyama, J. Imag. Sci. Technol., 37(2), 192-196 (1993).

• Organic Solar Cell Based on Multistep Charge Separation System Masahiro Hiramoto, Hiroyuki Fukusumi, and Masaaki Yokoyama, Appl. Phys. Lett., 61(21), 2580-2582 (1992).

• 有機顔料薄膜におけるキャリヤー生成とマイクロ波光電導 平本昌宏、坂上嘉孝、横山正明、日本化学会誌, 1992(10), 1180-1185 (1992).

• p-i-n Like Behavior in Three-layered Organic Solar Cells Having a Co-deposited Interlayer of Pigments Masahiro Hiramoto, Hiroshi Fujiwara, and Masaaki Yokoyama, J. Appl. Phys., 72(8), 3781-3787 (1992).

• Photomodulation of Photocurrent Multiplication in a High Gain Amorphous Silicon Carbide Film Masahiro Hiramoto, Kanji Yoshimura, and Masaaki Yokoyama, Appl. Phys. Lett., 60(9), 1102-1104 (1992).

• Photo-modulation of Light Up-conversion in Light Transducer Using High-gain Photoresponsive Amorphous Silicon Carbide Combined with Organic Electroluminescent Diode Masahiro Hiramoto, Kanji Yoshimura, and Masaaki Yokoyama, Appl. Phys. Lett., 60(3), 324-325 (1992).

• New Image Transducer Using Organic Electroluminescent Diode Combined with Photoresponsive Amorphous Silicon Carbide Masahiro Hiramoto and Masaaki Yokoyama, Proceedings of the 1991 International Display Research Conference of SID and IEEE (San Diego) 126-129 (1991).

• Photocurrent Multiplication in Amorphous Silicon Carbide Films Masahiro Hiramoto, Kanji Yoshimura, and Masaaki Yokoyama, Extended Preprints of IS&T 7th International Congress on Advances in Non-impact Printing Technologies (Portland, Oregon), vol. 1, 365-371 (1991).

• Photocurrent Multiplication in Amorphous Silicon Carbide Films Masahiro Hiramoto, Kanji Yoshimura, Yoshikazu Nakayama, Seiji Akita, Takao Kawamura, and Masaaki Yokoyama, Appl. Phys. Lett., 59(16), 1992-1994 (1991).

• Three-layered Organic Solar Cell with a Photoactive Interlayer of Codeposited Pigments Masahiro Hiramoto, Hiroshi Fujiwara, and Masaaki Yokoyama, Appl. Phys. Lett., 58(10), 1062-1064 (1991).

• Up-conversion of Red Light to Green by a New Type of Light Transducer Using Organic    Electroluminescent Diode Combined with Photoresponsive Amorphous Silicon Carbide Masahiro Hiramoto, Kanji Yoshimura, Tomoya Miyao, and Masaaki Yokoyama, Appl. Phys. Lett., 58(11), 1146-1148 (1991).

• Three-layer Organic Solar Cell with an Interlayer of Mixed Pigments Masahiro Hiramoto, Hiroshi Fujiwara, and Masaaki Yokoyama, Technical Digest of 5th International Photovoltaic Science and Engineering Conference (Kyoto), 419-422 (1990).

• キナクリドン顔料を用いた有機太陽電池におけるドーピング効果 平本昌宏、中村英樹、塩尻敏明、横山正明、 高分子論文集, 47(11), 915-920 (1990).

• Spatially Addressable Light Transducer Using an Organic Electroluminescent Diode  Combined with Amorphous Silicon Carbide Film as an Electron Photoinjecting Electrode Masahiro Hiramoto, Tomoya Miyao, and Masaaki Yokoyama, Appl. Phys. Lett., 57(16), 1625-1627 (1990).

• Effect of Thin Gold Interstitial-layer on the Photovoltaic Properties of Tandem Organic Solar Cell Masahiro Hiramoto, Minoru Suezaki, and Masaaki Yokoyama, Chem. Lett., 1990, 327-330 (1990).

• Doping Effect on the Two-layer Organic Solar Cell Masahiro Hiramoto, Yasuhisa Kishigami, and Masaaki Yokoyama, Chem. Lett., 1990, 119-122 (1990).

• Doping Effects on the Photovoltaic Properties of Two-layer Organic Solar Cell Masahiro Hiramoto, Yasuhisa Kishigami, and Masaaki Yokoyama, Proceedings of the 1st International Symposium on Chemistry of Functional Dyes   (Osaka), edited by Z. Yoshida and T. Kitao, 572-575 (1989).

• Carbon Dioxide Reduction at Low Temperature on Various Metal Electrodes Masashi Azuma, Kazuhito Hashimoto, Masahiro Hiramoto, Masahiro Watanabe, and Tadayoshi Sakata, J. Electroanal. Chem. Interfacial Electrochem., 260, 441-445 (1989).

• Photo-induced Electron Transfer from Adsorbed Rhodamine B to Oxide Semiconductor Substrates in Vacuo: Semiconductor Dependence Kazuhito Hashimoto, Masahiro Hiramoto, and Tadayoshi Sakata, Chem. Phys. Lett., 148(2/3), 215-220 (1988).

• Temperature Independent Electron-Transfer: Rhodamine B/Oxide Semiconductor Dye-Sensitization System Kazuhito Hashimoto, Masahiro Hiramoto, and Tadayoshi Sakata, J. Phys. Chem., 92(15), 4272-4274 (1988).

• Luminescence Decays of Ru(II) Complexes Adsorbed on Metal Oxide Powders in Vacuo: Energy Gap Dependence of Electron Transfer Rate Kazuhito Hashimoto, Masahiro Hiramoto, A. B. P. Lever, and Tadayoshi Sakata, J. Phys. Chem., 92(5), 1016-1018 (1988).

• Luminescence Decays and Spectra of Ru(bpy)32+ Adsorbed on TiO2 in Vacuo and in the Presence of Water Vapor Kazuhito Hashimoto, Masahiro Hiramoto, Takashi Kajiwara, and Tadayoshi Sakata, J. Phys. Chem., 92(16), 4636-4640 (1988).

• Dynamics of Charge Transfer Processes at Semiconductor/Electrolyte (or Gas) Interfaces Tadayoshi Sakata, Masahiro Hiramoto, and Kazuhito Hashimoto, Proceedings of Symposium on Photoelectrochemistry and Electrosynthesis on Semiconductor Materials (the 172nd Electrochemical Society Meeting, Honolulu), 88-14, 428-435 (1987).

• Photoluminescence of TiO2 Powder and Its Relation with Photocatalytic Reactions Kazuhito Hashimoto, Masahiro Hiramoto, and Tadayoshi Sakata, Proceedings of Symposium on Photoelectrochemistry and Electrosynthesis on Semiconductor Materials (the 172nd Electrochemical Society Meeting, Honolulu), 88-14, 395-400 (1987).

• Ultramicrostructured Electrode System Prepared From the Multilayered Thin Film and Its New Electrochemical Properties Masahiro Hiramoto, Kazuhito Hashimoto, and Tadayoshi Sakata, Proceedings of Symposium on Photoelectrochemistry and Electrosynthesis on Semiconductor Materials (the 172nd Electrochemical Society Meeting, Honolulu), 88-14, 304-310 (1987).

• Time-resolved Measurements of Luminescence of Ru(II) Complexes Chemically or Physically Immobilized on Semiconductor or Insulator Particles in Various Solvents Kazuhito Hashimoto, Masahiro Hiramoto, Tadayoshi Sakata, Hiroji Muraki, Hirofumi Takemura, and Masamichi Fujihira, J. Phys. Chem., 91(24), 6198-6203 (1987).

• Electron Transfer and Photoluminescence Dynamics of CdS Particles Deposited on Porous Vycor Glass Masahiro Hiramoto, Kazuhito Hashimoto, and Tadayoshi Sakata, Chem. Phys. Lett., 133(5), 440-444 (1987).

• Excited Tetraphenylporphine on a Silver Surface: Fluorescence Quenching and Interference Effects Shigeru Ohshima, Takashi Kajiwara, Masahiro Hiramoto, Kazuhito Hashimoto, and Tadayoshi Sakata, J. Phys. Chem., 90(19), 4474-4476 (1986).

• Visible-Light Induced Water Splitting on New Semiconductor Electrodes Made by Photolithography Masahiro Hiramoto, Kazuhito Hashimoto, and Tadayoshi Sakata, Chem. Lett., 1986, 899-902 (1986).

• Tungsten- or Molybdenum-Coated p-n Junction Silicon Electrodes for Efficient and Stable      Photoelectrochemical Solar Energy Conversion Yoshihiro Nakato, Yasushi Iwakabe, Masahiro Hiramoto, and Hiroshi Tsubomura, J. Electrochem. Soc., 133(5), 900-904 (1986).

• Metal Oxide Coated p-n Junction Silicon Electrodes for Photoelectrochemical Solar Energy Conversion Hiroshi Tsubomura, Yoshihiro Nakato, Masahiro Hiramoto, and Hiroyuki Yano, Can. J. Chem., 63, 1759-1762 (1985).

• ESCA and Photoelectrochemical Studies of p-n Junction Silicon Electrodes Protected by Platinum Deposition for Use in Solar Energy Conversion Yoshihiro Nakato, Masahiro Hiramoto, Yasushi Iwakabe, and Hiroshi Tsubomura, J. Electrochem. Soc., 132(2), 330-334 (1985).

• Hydrogen Evolution and Iodine Reduction on an Illuminated n-p Junction Silicon Electrode and Its Application to Efficient Solar Photoelectrolysis of Hydrogen Iodide Yoshihiro Nakato, Yoshihiro Egi, Masahiro Hiramoto, and Hiroshi Tsubomura, J. Phys. Chem., 88(19), 4218-4222 (1984).

• p-n Junction Silicon Electrode Coated with Noble Metal for Efficient Solar Photoelectrolysis of Hydrogen Iodide Yoshihiro Nakato, Motomu Yoshimura, Masahiro Hiramoto, Akira Tsumura, Toshiaki Murahashi, and Hiroshi Tsubomura, Bull. Chem. Soc. Jpn., 57(2), 355-360 (1984).

• Photocatalytic and Photoelectrochemical Reactions of Aqueous Solutions of Formic Acid, Formaldehyde, and Methanol on Platinized CdS Powder and at a CdS electrode Michio Matsumura, Masahiro Hiramoto, Toshio Iehara, and Hiroshi Tsubomura, J. Phys. Chem., 88(2), 248-250 (1984).

• Photoelectrolysis of Water under Visible Light with Doped SrTiO3 Electrodes Michio Matsumura, Masahiro Hiramoto, and Hiroshi Tsubomura, J. Electrochem. Soc., 130(2), 326-330 (1983).

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