KINDAI UNIVERSITY


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TANAKA Senku

Profile

FacultyDepartment of Electric and Electronic Engineering / Graduate School of Science and Engineering Research
PositionAssociate Professor
Degree
Commentator Guidehttps://www.kindai.ac.jp/meikan/312-tanaka-senku.html
URL
Mail
Last Updated :2020/04/05

Education and Career

Education

  •  - 2000 , Osaka City University, Graduate School, Division of Engineering
  •  - 2000 , Osaka City University
  •  - 1998 , Osaka City University, Faculty of Engineering
  •  - 1998 , Osaka City University, Faculty of Engineering
  •   2000 04  - 2003 03 , The Graduate University for Advanced Studies, The School of Mathematical and Physical Science

Academic & Professional Experience

  •   2019 04 ,  - 現在, Associate Professor, Faculty of Science and Technology, Kindai University
  •   2018 03 ,  - 現在, Research Institute for Science and Technology, Kindai University
  •   2013 04 ,  - 2019 03 , Lecturer, Faculty of Science and Engineering, Department of Electric and Electronic Engineering, Kinki University
  •   2009 03 ,  - 2013 03 , Assistant Professor, Interdisciplinary Faculty of Science and Engineering, Department of Physics and Materials Science, Shimane University
  •   2004 09 ,  - 2009 02 , Research Associate, Interdisciplinary Center for Science Research, Shimane University
  •   2007 09 ,  - 2008 03 , Visiting Research Scholar, The Alan G MacDiarmid NanoTech Institute, The University of Texas at Dallas
  •   2003 05 ,  - 2004 08 , Research Scientist, Research Center for Materials Science, Nagoya University

Research Activities

Research Areas

  • Nanotechnology/Materials, Organic functional materials
  • Nanotechnology/Materials, Applied materials
  • Nanotechnology/Materials, Thin-film surfaces and interfaces

Published Papers

  • Relationship Between the Shortening of .PI.-conjugation Length of P3HT by Bromination and Photovoltaic Properties of P3HT:PCBM Bulk-heterojunction Solar Cells, 義富卓也, 高田謙, 谷合伯斗, 安東秀峰, 松本浩一, 田中仙君, 電気学会論文誌 C, 電気学会論文誌 C, 138(11), 1298‐1304(J‐STAGE), 2018 , Refereed
  • Dynamics of surface photo-voltage in GaAs systems studied with time-resolved photoelectron spectroscopy, Masao Kamada, Junpei Azuma, Senku Tanaka, Kazutoshi Takahashi, 3(1), Feb. 2016 , Refereed
  • Excitation process of Ce3+ and Eu2+ ions doped in SrGa2S4 crystals under the condition of multiplication of electronic excitations, Kitaura Mamoru, Tanaka Senku, Itoh Minoru, Ohnishi Akimasa, Kominami Hiroko, Hara Kazuhiko, Journal of Luminescence, Journal of Luminescence, 172, 243 - 248, 2016 , Refereed
  • Optical properties and electronic structure of Lu2SiO5 crystals doped with cerium ions: Thermally-activated energy transfer from host to activator, Mamoru Kitaura, SenkuTanaka, Minoru Itoh, Journal of Luminescence, Journal of Luminescence, 158, 226 - 230, Feb. 2015 , Refereed
  • Electroabsorption under white light illumination to investigate the internal electric field of the organic thin-film solar cells under operation, Takuya Nishimura, Tomotaka Furuyama, Masaru Miyazaki, Senku Tanaka, Ichiro Hiromitsu, Applied Physics Letters, Applied Physics Letters, 103(22), 223306, 2013 , Refereed
  • Effect of iodine doping of phthalocyanine on the photocurrent generation in a phthalocyanine/C60 heterojunction, MIZUTA SHINSEI, IYOTA MASATOSHI, TANAKA SENKU, HIROMITSU ICHIRO, Thin Solid Films, Thin Solid Films, 520(17), 5761 - 5769, Jun. 2012 , Refereed
  • Organic thin-film solar cells with a Cu anode: Improvement of the photovoltaic properties on aging in air, YOSHIDA YUKI, TANAKA SENKU, FUJITA YASUHISA, HIROMITSU ICHIRO, Journal of Applied Physics, Journal of Applied Physics, 106(6), 064510, Sep. 2009 , Refereed
  • Semitransparent organic photovoltaic cell with carbon nanotube-sheet anodes and Ga-doped ZnO cathodes, S. Tanaka, A.A. Zakhidov, R. Ovalle-Robles, Y. Yoshida, I. Hiromitsu, Y. Fujita, K. Yoshino, 159, 2326 - 2328, 2009 , Refereed
  • Photoinduced energy transfer in ZnO-tetraphenylporphyrin systems, Ichiro Hiromitsu, Takahisa Ikeue, Kazuhiro Karino, Takatsugu Ohno, Senku Tanaka, Hideo Shiratori, Shigekazu Morito, Yasuhisa Fujita, Makoto Handa, 474(4-6), 315 - 319, 2009 , Refereed
  • Monolithic parallel tandem organic photovoltaic cell with transparent carbon nanotube interlayer, S. Tanaka, K. Mielczarek, R. Ovalle-Robles, B. Wang, D. Hsu, A. A. Zakhidov, 94(11), 113506, 2009 , Refereed
  • Photoelectron Spectroscopy Study of Photoresponsive Change in Electronic Structure of Amorphous Photochromic Diarylethene Film, Senku Tanaka, Masaya Toba, Takuya Nakashima, Tsuyoshi Kawai, Katsumi Yoshino, 47(2 Issue 2), 1215 - 1218, 2008 , Refereed
  • Ga-doped-ZnO film as a transparent electrode for phthalocyanine/perylene heterojunction solar cell, Y. Yoshida, S. Tanaka, I. Hiromitsu, Y. Fujita, K. Yoshino, 47, 867 - 871, 2008 , Refereed
  • Effect of insertion of a thin bathocuproine layer at Au/Zn-phthalocyanine interface on energy level alignment and morphology, Senku Tanaka, Yuki Yoshida, Makoto Nonomura, Katsumi Yoshino, Ichiro Hiromitsu, 516(6), 1006 - 1011, 2008 , Refereed
  • Internal electric field and photocurrent of polymer/perylen heterojunction solar cell, Ichiro Hiromitsu, Shin-ichiro Mada, Ayumi Inoue, Yuki Yoshida, Senku Tanaka, 46(11), 7241 - 7246, 2007 , Refereed
  • Photovoltaic properties and inner electric field of ZnO/Zn-phthalocyanine hybrid solar cells, Yuki Yoshida a, Makoto Nakamuraa, Senku Tanaka, Ichiro Hiromitsu a, Yasuhisa Fujita c, Katsumi Yoshino, Synthetic Metals, Synthetic Metals, 156, 1213 - 1217, Sep. 2006 , Refereed
  • Enhanced hole transport from Au to Zn-phthalocyanine by an insertion of a thin n-type layer, Makoto Nonomura, Senku Tanaka, Ichiro Hiromitsu, Applied Physics Letters, Applied Physics Letters, 88, 042111, Jan. 2006 , Refereed
  • Doping Effect of Tetrathianaphthacene Molecule in Organic Semiconductors on Their Interfacial Electronic Structures Studied by UV Photoemission Spectroscopy, Senku Tanaka, Kaname Kanai, Eiji Kawabe, Takashi Iwahashi, Toshio Nishi, Yukio Ouchi, Kazuhiko Seki, Japanese Journal of Applied Physics, Japanese Journal of Applied Physics, 44(6A), 3760 - 3763, Jun. 2005 , Refereed
  • Surface photovoltage effect and its time dependence in GaAs–GaAsP superlattice studied with combination of synchrotron and laser radiation, S. Tanaka, T. Nishitani, T. Nakanishi, S. D. More, J. Azuma, K. Takahashi, O. Watanabe, M. Kamada, Journal of Applied Physics, Journal of Applied Physics, 95(2), 551 - 556, Jan. 2004 , Refereed
  • Dynamics of Surface Photovoltage Effects on Clean and Negative Electron Affinity Surfaces of p -GaAs (100), Senku Tanaka, Sam Dylan More, Kazutoshi Takahashi, Masao Kamada, Journal of Physical Society of Japan, Journal of Physical Society of Japan, 72(3), 659 - 663, Mar. 2003 , Refereed
  • Ion Desorption Induced by Core-Level Excitation of H2O/Si(100): Evidence of Desorption due to the Multielectron Excitation/Decay, S. Tanaka, K. Mase, S. Nagaoka, M. Nagasono, M. Kamada, American Institute of Physics, J. Chem. Phys., American Institute of Physics, J. Chem. Phys., 117(9), 4479 - 4488, Sep. 2002 , Refereed
  • Beam-line systems for pump-probe photoelectron spectroscopy using SR and laser, Kamada Masao, Tanaka Senku, Takahashi Kazutoshi, Doi Yo-ichiro, Fukui Kazutoshi, Kinoshita Toyohiko, Haruyama Yuichi, Asaka Shuji, Fujii Yasuo, Itoh Minor, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 467-468, 1441 - 1443, Jul. 2001 , Refereed
  • Surface photovoltage effect on clean and negative electron-affinity surfaces of GaAs and its superlattice, Tanaka S, More SD, Nishitani T, Takahashi K, Nakanishi T, Kamada M, Hatanaka K, Nakano T, Imai K, Ejiri, Spin 2000, Spin 2000, 570, 1000 - 1002, 2001 , Refereed
  • Surface photovoltage effects on p-GaAs (100) from core-level photoelectron spectroscopy using synchrotron radiation and a laser, Tanaka S, More SD, Murakami J, Itoh M, Fujii Y, Kamada, Physical Review B, Physical Review B, 64(15), 155308, 2001 , Refereed
  • Electron-Ion Coincidence Study for the TiO2(001) Surface, S. Tanaka, K. Mase, M. Nagasono, S. Nagaoka, M. Kamada, Elsevier, Surf. Sci., Elsevier, Surf. Sci., 451(1/3), 182 - 187, Apr. 2000 , Refereed
  • Electron-Ion Coincidence Spectroscopy as a New Tool for Surface Analysis-an Application to the Ice Surface, S. Tanaka, K. Mase, M. Nagasono, S. Nagaoka, M. Kamada, E. Ikenaga, T. Sekitani, K. Tanaka, Japan Society of Applied Physics, Jpn. J. Appl. Phys., Japan Society of Applied Physics, Jpn. J. Appl. Phys., 39(7B), 4489 - 4492, 2000 , Refereed
  • Photo-induced change of the semiconductor-vacuum interface of p-GaAs (100) studied by photoelectron spectroscopy, Kamada M, Murakami J, Tanaka S, More SD, Itoh M, Fujii, Surface Science, Surface Science, 454, 525 - 528, 2000 , Refereed
  • Study of ion desorption induced by the core-level excitation on the CaF2(111) surface, S. Tanaka, K. Mase, M. Nagasono, M. Kamada, J. Electron Spectros. Relat. Phenom., J. Electron Spectros. Relat. Phenom., 92(1/3), 119 - 122, 1998 , Refereed

Misc

  • 半透明有機薄膜太陽電池の光電変換特性の膜厚依存性, 義富卓也, 田中仙君, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 79th, ROMBUNNO.20p‐PB4‐7,   2018 09 05 , http://jglobal.jst.go.jp/public/201802211204086517
  • CH3NH3PbI3/CH3NH3PbBr3積層界面における混晶化の進行, 坂戸雅智, 上山夏樹, 田中仙君, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 79th, ROMBUNNO.20p‐PB4‐32,   2018 09 05 , http://jglobal.jst.go.jp/public/201802267550744351
  • Poly(3‐hexylthiophene)(P3HT)への様々な割合での臭素の導入に基づいた系統的な合成と物性評価, 谷合伯斗, 高田謙, 義富卓也, BINTI ROSLI Siti Khadijah, 柏村成史, 安東秀峰, 田中仙君, 松本浩一, 電気化学会大会講演要旨集(CD-ROM), 85th, ROMBUNNO.2I02,   2018 02 23 , http://jglobal.jst.go.jp/public/201802256902934099
  • P3HT:PCBMバルクヘテロ接合型太陽電池の光電変換特性におけるP3HTの臭素化の影響, 義富卓也, 高田謙, 谷合伯斗, 安東秀峰, 松本浩一, 田中仙君, 電気関係学会関西連合大会講演論文集(CD-ROM), 2017, ROMBUNNO.G6‐23,   2017 11 06 , http://jglobal.jst.go.jp/public/201702235119039591
  • 真空蒸着法によるCH3NH3PbI3/CH3NH3PbBr3積層膜の作製と評価, 坂戸雅智, 上山夏樹, 義富卓也, 田中仙君, 電気関係学会関西連合大会講演論文集(CD-ROM), 2017, ROMBUNNO.G6‐18,   2017 11 06 , http://jglobal.jst.go.jp/public/201702282908736613
  • 単結晶を蒸着源とした真空蒸着による鉛ハライドペロブスカイト薄膜の作製, 上山夏樹, 田中仙君, 電気関係学会関西連合大会講演論文集(CD-ROM), 2017, ROMBUNNO.G6‐17,   2017 11 06 , http://jglobal.jst.go.jp/public/201702287991120288
  • 単結晶を蒸着源とした真空蒸着法による鉛ハライドペロブスカイト薄膜の作製と評価, 上山夏樹, 坂戸雅智, 義富卓也, 田中仙君, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 78th, ROMBUNNO.6a‐A413‐7,   2017 08 25 , http://jglobal.jst.go.jp/public/201702287667058602
  • 有機薄膜太陽電池のドナー材料として用いられるPoly(3‐hexylthiophene)(P3HT)への臭素の導入率と発電効率の関係, 松本浩一, 高田謙, 谷合伯斗, SITI Khadhijah, 義富卓也, 柏村成史, 田中仙君, 日本化学会春季年会講演予稿集(CD-ROM), 97th, ROMBUNNO.2F5‐37,   2017 03 03 , http://jglobal.jst.go.jp/public/201702280125729721
  • 半透明有機薄膜太陽電池の上下電極への同時光照射による光電変換特性の向上, 塚昌樹, 田中仙君, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 77th, ROMBUNNO.13p‐P9‐7,   2016 09 01 , http://jglobal.jst.go.jp/public/201602290657547288
  • フタロシアニン塗布膜をドナー層とする有機薄膜太陽電池の効率向上の試み, 川西有輝, 吉原健太, 池上崇久, 半田真, 田中仙君, 広光一郎, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 61st, ROMBUNNO.18A-PA6-29,   2014 03 03 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201402245152720712
  • 軟X線吸収・発光分光法による有機薄膜太陽電池の電子状態の研究, 有塚あすか, 中島伸夫, 田中仙君, 手塚泰久, 北島義典, 圓山裕, 日本放射光学会年会・放射光科学合同シンポジウム予稿集, 27th, 113,   2014 01 11 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201402232533743889
  • 動作環境下における有機薄膜太陽電池内の電子構造解明, 田中仙君, 村田学術振興財団年報, 27, 124, 131,   2013 12 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201402243508963515
  • Photoelectric emission from organic/metal interfaces studied by photoelectron spectroscopy, 113, 243, 59, 62,   2013 10 11 , http://ci.nii.ac.jp/naid/40019867318
  • Photoelectric emission from organic/metal interfaces studied by photoelectron spectroscopy, TANAKA Senku, OTANI Tomohiro, HIROMITSU Ichiro, Technical report of IEICE. OME, 113, 243, 59, 62,   2013 10 11 , http://ci.nii.ac.jp/naid/110009821711
    Summary:Many of organic thin films and metal films have the work function larger than 4 eV. Thus, in general, the photoelectric emission is observed under light irradiation of the ultra-violet light with energy larger than 4 eV. However, we observed photoelectric emission under the near ultra-violet light irradiation from organic/metal interfaces with a surface treatment by metal deposition. The results of the photoelectron spectroscopy infer that the vacuum level shift at the organic/metal interfaces plays an important role for the anomalous photoelectric emission.
  • Photoelectric emission from organic/metal interfaces studied by photoelectron spectroscopy, TANAKA SENKU, OTANI TOMOHIRO, HIROMITSU ICHIRO, 電子情報通信学会技術研究報告, 113, 243(OME2013 51-67), 59, 62,   2013 10 04 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201302295529008192
  • 28pPSB-14 Electronic structure study of an organic thin-film solar cell by soft x-ray emission spectroscopy, Aritsuka Asuka, Nakajima Nobuo, Tanaka Senku, Tezuka Yasuhisa, Maruyama Hiroshi, Meeting abstracts of the Physical Society of Japan, 68, 1,   2013 03 26 , http://ci.nii.ac.jp/naid/110009645436
  • 白色光照射電場変調吸収分光法で見たショットキー障壁型有機薄膜太陽電池の内部電場, 西村拓也, 古山智隆, 田中仙君, 広光一郎, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 60th, ROMBUNNO.29P-G18-8,   2013 03 11 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201302229210039327
  • 微量の金属を蒸着した有機薄膜からの近紫外光照射による光電子放出, 大谷知宏, 田中仙君, 篠原茜, 小川浩二, 鎌田雅夫, 広光一郎, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 60th, ROMBUNNO.28A-G13-8,   2013 03 11 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201302287199265271
  • 軟X線発光分光法による有機薄膜太陽電池の電子状態の研究, 有塚あすか, 中島伸夫, 田中仙君, 手塚泰久, 圓山裕, 日本物理学会講演概要集, 68, 1, 835,   2013 03 05 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201302273411820549
  • Organic Photovoltaics with Carbon Nanotube Charge Collectors: Inverted Structures for Parallel Tandems, MIELCZAREK KAMIL, COOK ALEXANDER, ZAKHIDOV ANVAR, TANAKA SENKU, HIROMITSU ICHIRO, YOSHINO KATSUMI, 電気材料技術雑誌, 21, 1, 21, 30,   2012 09 30 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201302294513745417
  • 可溶性フタロシアニンのドーピングによるP3HT:PCBM有機薄膜太陽電池の光電変換波長領域の拡大, 田中仙君, 塩野雄貴, 吉原健太, 池上崇久, 半田真, 廣光一郎, 応用物理学会学術講演会講演予稿集(CD-ROM), 73rd, ROMBUNNO.11P-PB1-6,   2012 08 27 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201202253417471238
  • 酸化亜鉛微粒子‐ポルフィリン複合体の発光特性 IV, 後藤智宏, 風盛文哉, 池上崇久, 田中仙君, 藤田恭久, 半田真, 広光一郎, 応用物理学会学術講演会講演予稿集(CD-ROM), 73rd, ROMBUNNO.13A-PB4-2,   2012 08 27 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201202279384363441
  • 有機/有機界面での光起電力と太陽電池の開放電圧との相関, 田中仙君, 福澤謙, 大谷知宏, 小川浩二, 鎌田雅夫, 廣光一郎, 応用物理学関係連合講演会講演予稿集(CD-ROM), 59th, ROMBUNNO.16P-GP9-6,   2012 02 29 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201202264922402706
  • 亜鉛フタロシアニン/C60界面における光起電力の光電子分光法による観測, 田中仙君, 福澤謙, 大谷知宏, 廣光一郎, 小川浩二, 鎌田雅夫, 日本放射光学会年会・放射光科学合同シンポジウム予稿集, 25th, 87,   2012 01 06 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201202222748019545
  • 12pYD-2 Energy level alignment at the organic semiconducting thin fim/metal interface, Kanai K, Ohuchi Y, Hayashi N, Tanaka S, Nishi T, Ikame T, Kawabe E, Seki K, Meeting abstracts of the Physical Society of Japan, 59, 2,   2004 08 25 , http://ci.nii.ac.jp/naid/110002050206
  • Time dependence of the surface photovoltage effect on p- type GaAs, Tanaka S, More S.D, Takahashi K, Kamada M, Meeting Abstracts of the Physical Society of Japan, 57, 0,   2002 , http://ci.nii.ac.jp/naid/110009719184
  • 25aYD-11 Surface photo-voltage effects on GaN studied by the combination of SR and laser, Takahashi K, Hayakawa K, Tanaka S, Itoh M, Kamada M, Meeting Abstracts of the Physical Society of Japan, 57, 0,   2002 , http://ci.nii.ac.jp/naid/110009773875
  • 26pPSA-11 Temperature and time dependence of the surface photovoitage effect on n-type GaAs, Tanaka S, Takahashi K, Azuma J, Kamada M, Meeting Abstracts of the Physical Society of Japan, 57, 0,   2002 , http://ci.nii.ac.jp/naid/110009773927
  • The surface-photovoltage effect on GaAs-GaAsP super-lattice, Tanaka S, More S. D, Nishitani T, Takahashi K, Nakanishi T, Kamada M, Meeting abstracts of the Physical Society of Japan, 56, 2,   2001 09 03 , http://ci.nii.ac.jp/naid/110002046780
  • Core-level photoelectron spectra of photoexcited GaAs (100) II : Time dependence of the surface photovoltage, Tanaka S, Takahashi K, More S. D, Fujii Y, Kamada M, Meeting abstracts of the Physical Society of Japan, 56, 1,   2001 03 09 , http://ci.nii.ac.jp/naid/110002162326
  • Photoelectron spectroscopy of a spin-crossover complex, Kamada M, Doi Y, Fukui K, Haruyama Y, Tanaka S, Asaka S, Tayagaki T, Yonemura N, Tanaka K, Meeting abstracts of the Physical Society of Japan, 55, 1,   2000 03 10 , http://ci.nii.ac.jp/naid/110001914677
  • Core level pnotoelectron spectra of photoexcited GaAs(100), Tanaka S, More S. D, Fujii Y, Kamada M, Meeting abstracts of the Physical Society of Japan, 55, 1,   2000 03 10 , http://ci.nii.ac.jp/naid/110001914876
  • 29a-ZH-4 Core-level photoemission spectra of laser-excited GaAs, Murakami J, Itoh M, Tanaka S, Fujii Y, Asaka S, Kamada M, Meeting abstracts of the Physical Society of Japan, 54, 1,   1999 03 15 , http://ci.nii.ac.jp/naid/110002218554
  • 3P-YF-2 Resonant photoemission and reflectivity spectra of Yb_3S_4, Kimura S, Tanaka S, Kamada M, Kwon Y. S, Suzuki T, Meeting Abstracts of the Physical Society of Japan, 51, 0,   1996 , http://ci.nii.ac.jp/naid/110009790393

Research Grants & Projects

  • JSPS Grants-in-Aid for Scientific Research, Challenging Exploratory Research, Study of photoelectric emission from a metal surface on an organic layer under irradiation with near-UV light
  • The Murata Science Foundation, Research grant, Investigation of electronic structures of the organic photovoltaic cells under the operating conditions, The electronic structure of the organic electronics devices has attracted much interest since it affects the performance of the devices. Many researches are reporting the electronic structure of the organic layers of the organic solar cell for understanding and controlling the photovoltaic properties. One of the powerful tools to investigate the electronic structure of the organic layer is the photoelectron spectroscopy. The electronic structure of the organic layer in the devices can be inferred from the photoelectron spectra of the organic thin films. In the present study, photoinduced effects on the electronic structure of the donor/acceptor interface has been investigated by using the photoelectron spectroscopy under the light irradiation.
  • JSPS Grants-in-Aid for Scientific Research, Grant-in-Aid for Young Scientists(B), Study of the effect of light irradiation on the electronic structure of organic semiconductor films, The effect of the light irradiation on the electronic structure of a donor/acceptor(DA) heterojunction interface was investigated by using the photoelectron spectroscopy. Under the light irradiation, the photoelectron spectrum was shifted corresponds to the polarity of the photovoltage of the DA heterojunction photovoltaic cell. The shift of photoelectron spectrum was caused by the photo-generated holes(electrons) in the donor(acceptor) layer. The shift value was, however, smaller than the typical value of open-circuit voltage of the DA heterojunction photovoltaic cell. The present results imply that the development of an electromotive force in an organic photovoltaic cell is closely related to a presence of semipermeable membranes for the photo-generated charges in the photovoltaic cell.