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Controling Interfacial Structure in Mixed Films for Efficient Organic Solar Cells

Research Project

Project/Area Number 16H07421
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Device related chemistry
Research InstitutionInstitute for Molecular Science

Principal Investigator

Izawa Seiichiro  分子科学研究所, 物質分子科学研究領域, 助教 (60779809)

Project Period (FY) 2016-08-26 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords有機太陽電池 / 有機半導体 / 界面 / 電荷再結合 / 電荷分離 / ドーピング / エネルギー準位接続 / 有機薄膜太陽電池 / 界面構造 / ドナー/アクセプター界面
Outline of Final Research Achievements

Organic solar cells attract much attention as future energy conversion devices due to their advantages such as low manufacturing cost and flexibility. In this study, we controlled the structure of the electron donor/acceptor interfaces where charge separation and recombination occurred in the mixed film. We clarified the relationship between the nanostructure and the photoelectric conversion process, and improved the performance. First, we controlled the mixed state near the interface by the difference of polymer side chain structure, and clarified the necessity of weakening Coulomb binding energy in order to improve the open-circuit voltage. We also succeeded in controlling the open-circuit voltage by impurity doping.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Annual Research Report
  • Research Products

    (13 results)

All 2018 2017 2016

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Effect of trap-assisted recombination on open-circuit voltage loss in phthalocyanine/fullerene solar cells2018

    • Author(s)
      Shintaku Naoto、Hiramoto Masahiro、Izawa Seiichiro
    • Journal Title

      Organic Electronics

      Volume: 55 Pages: 69-74

    • DOI

      10.1016/j.orgel.2018.01.016

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Crystallization and Polymorphism of Organic Semiconductor in Thin Film Induced by Surface Segregated Monolayers2018

    • Author(s)
      Izawa Seiichiro、Nakano Kyohei、Suzuki Kaori、Chen Yujiao、Kikitsu Tomoka、Hashizume Daisuke、Koganezawa Tomoyuki、Nguyen Thuc-Quyen、Tajima Keisuke
    • Journal Title

      Scientific Reports

      Volume: 8 Issue: 1 Pages: 481-491

    • DOI

      10.1038/s41598-017-18881-y

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Doping for Controlling Open-Circuit Voltage in Organic Solar Cells2018

    • Author(s)
      Shintaku Naoto、Hiramoto Masahiro、Izawa Seiichiro
    • Journal Title

      Journal of Physical Chemistry C

      Volume: 122 Issue: 10 Pages: 5248-5253

    • DOI

      10.1021/acs.jpcc.7b12203

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hall Effect in Bulk-Doped Organic Single Crystals2017

    • Author(s)
      C. Ohashi, S. Izawa, Y. Shinmura, M. Kikuchi, S. Watase, M. Izaki, H. Naito, and M. Hiramoto
    • Journal Title

      Adv. Mater.

      Volume: 29 Issue: 23 Pages: 1605619-1605619

    • DOI

      10.1002/adma.201605619

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hole- and electron-only transport in ratio-controlled organic co-deposited films observed by impedance spectroscopy2017

    • Author(s)
      Shintaku Naoto、Izawa Seiichiro、Takagi Kenichiro、Naito Hiroyoshi、Hiramoto Masahiro
    • Journal Title

      Organic Electronics

      Volume: 50 Pages: 515-520

    • DOI

      10.1016/j.orgel.2017.08.020

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Drawing organic photovoltaics using paint marker pens2017

    • Author(s)
      Suzuki Kaori、Izawa Seiichiro、Chen Yujiao、Nakano Kyohei、Tajima Keisuke
    • Journal Title

      AIP Advances

      Volume: 7 Issue: 11 Pages: 115002-115008

    • DOI

      10.1063/1.5006352

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 膜中のバンドの曲がりが有機太陽電池の開放端電圧に与える影響2018

    • Author(s)
      伊澤 誠一郎、新宅 直人、平本 昌宏
    • Organizer
      応用物理学会 春季学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] ドナー/アクセプター界面の結晶性が有機薄膜太陽電池の開放電圧に与える影響2017

    • Author(s)
      伊澤 誠一郎、菊地 満、新宅 直人、平本 昌宏
    • Organizer
      応用物理学会 秋季学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Induced Crystallization of [6,6]-Phenyl-C61-Butyric Acid Methyl Ester in Thin Films by Surface Segregated Monolayers2017

    • Author(s)
      Seiichiro Izawa, Kyohei Nakano, Kaori Suzuki,Yujiao Chen, Tomoka Kikitsu, Daisuke Hashizume, Tomoyuki Koganezawa, Thuc-Quyen Nguyen, Keisuke Tajima
    • Organizer
      European Conference, Molecular Electronics 2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] Induced Crystallization of Organic Semiconductorin Thin Films by Surface Segregated Monolayers2017

    • Author(s)
      Seiichiro Izawa, Kyohei Nakano, Kaori Suzuki,Yujiao Chen, Tomoka Kikitsu, Daisuke Hashizume, Tomoyuki Koganezawa, Thuc-Quyen Nguyen, Keisuke Tajima
    • Organizer
      27th International Photovoltaic Science and Engineering Conference
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 有機薄膜太陽電池で電荷再結合を抑制するためのドナー/アクセプター界面構造2017

    • Author(s)
      伊澤 誠一郎、菊地 満、新宅 直人、平本 昌宏
    • Organizer
      応用物理学会 春季学術講演会
    • Place of Presentation
      パシフィコ横浜、横浜市、神奈川県
    • Related Report
      2016 Annual Research Report
  • [Presentation] 有機電子デバイスの高性能化に向けた界面構造制御2017

    • Author(s)
      伊澤誠一郎
    • Organizer
      SPring-8 次世代先端デバイス研究会
    • Place of Presentation
      AP品川、港区、東京都
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Effects of Energetics at Donor/Acceptor Interfaces on Organic Solar Cells2016

    • Author(s)
      Seiichiro Izawa, Kyohei Nakano, Kaori Suzuki, Keisuke Tajima
    • Organizer
      KJF International Conference on Organic Materials for Electronics and Photonics 2016
    • Place of Presentation
      ACROS Fukuoka, Fukuoka
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research

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Published: 2016-09-02   Modified: 2019-03-29  

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