Development of high efficient organic photovoltaics by control of electronic structure and interface structure

2011 Fiscal Year Final Research Report

• Project/Area Number: 22850012
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Functional materials/Devices
• Research Institution: The Institute of Physical and Chemical Research (2011); Okayama University (2010)
• Principal Investigator: AKAIKE Kouki 独立行政法人理化学研究所, 光電変換研究チーム, 特別研究員 (90581695)
• Project Period (FY): 2010 – 2011
• Keywords: 有機太陽電池 / ケルビンプローブ法 / 界面電子構造 / 光電流発生

Research Abstract

Correlation between the interfacial electronic structure and device performance of organic photovoltaics is indispensible to provide well-defined guidelines for highly efficient organic photovoltaics(OPVs). In this research, we first elucidated the distribution of the internal potential in planar heterojunction OPVs using Kelvin probe method. Secondly, the electronic structure at donor/acceptor interface could be modified by the control of substrate work function. Based on this finding, it was found that the formation of the interfacial dipole at the donor/acceptor interface strongly influences photocurrent generation

Research Products

• [Journal Article] Characteristics of conjugated hydrocarbon based thin film transistor with ionic liquid gate dielectric (2011)
  • Author(s): Y. Kaji, K. Ogawa, R. Eguchi, H. Goto, Y. Sugawara, T. Kambe, K. Akaike, S. Gohda, A. Fujiwara, Y. Kubozono
  • Journal Title: Org. Electron. Volume: 12 Pages: 2076
  • Peer Reviewed
• [Journal Article] Incommensurate Crystalline phase of n-Alkane Monolayers on Graphite(0001) (2011)
  • Author(s): O. Endo, T. Horikoshi, N. Katsumata, K. Otani, T. Fujishima, H. Goto, K. Minami, K. Akaike, and H. Ozaki
  • Journal Title: J. Phys. Chem. C Volume: 115 Pages: 5720-5725
  • Peer Reviewed
• [Journal Article] Metal-intercalated aromatic hydrocarbons : a new class of carbon-based superconductors (2011)
  • Author(s): Y. Kubozono, H. Mitamura, X. Lee, X. He, Y. Yamanari, Y. Takahashi, Y. Suzuki, Y. Kaji, R. Eguchi, K. Akaike, T. Kambe, H. Okamoto, A. Fujiwara, T. Kato, T. Kosugi and H. Aoki
  • Journal Title: Phys. Chem. Chem. Phys. Volume: 13 Pages: 16476
  • Peer Reviewed
• [Journal Article] Unoccupied states in copper phthalocyanine/fullerene blended films determined by inverse photoemission spectroscopy (2010)
  • Author(s): K. Akaike, A. Opitz, J. Wagner, W. Brutting, K. Kanai, Y. Ouchi and K. Seki
  • Journal Title: Org. Electron. Volume: 11 Pages: 1853
  • Peer Reviewed
• [Presentation] 有機太陽電池と界面電子構造の相関 (2012)
  • Author(s): 赤池幸紀
  • Organizer: 京都大学化学研究所セミナー
  • Place of Presentation: 京都大学化学研究所
  • Year and Date: 2012-05-17
• [Presentation] Correlation between Energy Level Alignment and Device Performance in Small-Molecule Based Organic Photovoltaic Cells (2011)
  • Author(s): Kouki Akaike and Yoshihiro Kubozono
  • Organizer: The 6^<th> Japan-Sweden Workshop on Advanced Spectroscopy of Organic Materials for Electronic Applications
  • Place of Presentation: ホテルアローレ(加賀市)
  • Year and Date: 2011-11-24
• [Presentation] 界面電子構造研究の有機太陽電池への展開 (2011)
  • Author(s): 赤池幸紀
  • Organizer: 有機デバイス院生研究会チュートリアル講演
  • Place of Presentation: 九州大学
  • Year and Date: 2011-06-18
• [Book] 有機分子性固体における電界効果キャリア注入と物性制御 (2011)
  • Author(s): 久保園芳博,加地由美子,小川景子,菅原保幸,江口律子,赤池幸紀,神戸高志,藤原明比古
  • Total Pages: 27-32
  • Publisher: 表面科学