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Development of novel electrically detected ESR and operand observation of charge recombination in organic solar cells

Research Project

Project/Area Number 17K14477
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Functional solid state chemistry
Research InstitutionShizuoka Institute of Science and Technology

Principal Investigator

wakikawa yusuke  静岡理工科大学, 先端機器分析センター, 講師 (90708512)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords有機薄膜太陽電池 / 電荷再結合 / 電子スピン共鳴 / 電流検出磁気共鳴 / インピーダンス分光 / 電気的検出ESR / EDMR
Outline of Final Research Achievements

The carrier recombination through electron-hole (e-h) pair play important roles in the electrical performance of organic polymer based devices. Electrically and capacitively detected magnetic resonance (EDMR and CDMR) that we built up in this study reveal the coexistence of two types of e-h pairs with different lifetimes in the device under operating condition. The short-lived e-h pair is a precursor of the recombination of free carriers in the bulk polymer. The long-lived e-h pair, which is selectively detected by CDMR, is involved in the recombination of space charges at the interface between the polymer and Al electrode.

Academic Significance and Societal Importance of the Research Achievements

低炭素社会の実現が求められている中で、有機半導体は軽量かつ安価な電子材料として注目されている。電荷は電気電導を担う基本単位であり、正と負の電荷が互いに引きつけ合い消滅する再結合は、素子性能を左右する重要な過程である。
本研究では、有機素子の再結合過程を調査するために、電気伝導測定と磁気共鳴法を融合した手法を開発した。本手法によって、これまで素子性能のボトルネックとされていた有機半導体内部の速い再結合だけでなく、電極界面に蓄積した電荷の遅い再結合を初めて明らかにした。蓄積した電荷の解消が高性能素子の実現の糸口になることを見出した本研究成果の学術的意義は極めて大きい。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (11 results)

All 2019 2018 2017

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Magnetoconductance Study on Nongeminate Recombination in Solar Cell Using Poly(3-hexylthiophene) and [6,6]-Phenyl-C61-butyric Acid Methyl Ester2018

    • Author(s)
      Shoji Ryota、Omori Takuya、Wakikawa Yusuke、Miura Tomoaki、Ikoma Tadaaki
    • Journal Title

      ACS Omega

      Volume: 3 Issue: 8 Pages: 9369-9377

    • DOI

      10.1021/acsomega.8b01746

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Temperature Dependence of Magnetophotoconductance in One-dimensional Molecular Assembly of Hexabenzocoronene2017

    • Author(s)
      Wakikawa, Yusuke; Ikoma, Tadaaki; Yamamoto, Yohei; Fukushima, Takanori; Akiyama, Kimio
    • Journal Title

      Omega

      Volume: 2 Issue: 7 Pages: 3260-3266

    • DOI

      10.1021/acsomega.7b00474

    • NAID

      120007134818

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 光電流検出磁気共鳴による有機単膜ダイオードの電荷再結合研究2019

    • Author(s)
      脇川祐介, 生駒忠昭
    • Organizer
      SEST2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] P3HT-PCBM系太陽電池の磁気インピーダンス分光2019

    • Author(s)
      工藤尚輝, 中島駿, 東海林良太, 脇川祐介, 三浦智明, 生駒忠昭1
    • Organizer
      光化学討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Dynamic Spin Effect on Triplet Fusion of 9,10-Diphenylanthracene2018

    • Author(s)
      Chika Itagoshi, Syunya Miyazaki, Tomoaki Miura, Sota Kasuya, Yusuke Wakikawa, Tadaaki Ikoma
    • Organizer
      APES-IES2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Magnetoconductance Study on Nongeminate Recombination in Solar Cell us-ing Poly(3-hexylthiophene) and [6,6]-Phenyl C61-butyric Acid Methyl Ester2018

    • Author(s)
      Ryota Shoji, Takuya Omori, Yusuke Wakikawa, Tomoaki Miura, Tadaaki Ikoma
    • Organizer
      APES-IES2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] ジフェニルアントラセン三重項融合の溶媒粘度効果2018

    • Author(s)
      宮﨑 駿弥、三浦 智明、粕谷 奏太、脇川 祐介、生駒 忠昭
    • Organizer
      光化学討論会
    • Related Report
      2018 Research-status Report
  • [Presentation] P3HT単膜ダイオード における 電荷再結合の光電流検出磁気共鳴 研究2018

    • Author(s)
      脇川祐介、生駒忠昭
    • Organizer
      SEST2018
    • Related Report
      2018 Research-status Report
  • [Presentation] 磁気インピーダンス分光によるP3HT:PCBM系有機薄膜太陽電池におけるキャリア動力学の研究2017

    • Author(s)
      工藤尚輝, 東海林良太, 脇川祐介, 三浦智明, 生駒忠昭
    • Organizer
      第56回電子スピン共鳴サイエンス学会
    • Related Report
      2017 Research-status Report
  • [Presentation] MDMO-PPV単膜ダイオードにおける磁気インピーダンス分光研究2017

    • Author(s)
      脇川祐介, 生駒忠昭
    • Organizer
      第56回電子スピン共鳴サイエンス学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 有機薄膜における磁気インピーダンス分光研究2017

    • Author(s)
      脇川祐介
    • Organizer
      第10回 研究・開発成果発表会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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