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Kinetics of primary processes in the organic solar cells by transient absorption and emission spectroscopies

Research Project

Project/Area Number 17K05760
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Physical chemistry
Research InstitutionJosai University

Principal Investigator

Mitsuke Koichiro  城西大学, 理学部, 教授 (50190682)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords有機太陽電池 / 光エネルギー変換 / 発光スペクトル / 時間分解分光 / 色素増感太陽電池 / ペロブスカイト太陽電池 / 酸化チタンナノ粒子 / 励起分子動力学 / ヨウ化鉛 / 過渡分光 / 時間分解発光 / エキシトン / 過渡発光 / 励起状態ダイナミクス / 酸化チタン / 電子移動 / 反応速度論 / 光励起動力学 / 電荷移動反応 / 化学反応速度論
Outline of Final Research Achievements

We studied dye-sensitized solar cells (DSSCs) consisting of multilayered nanocrystalline TiO2 films with sensitizer dye to achieve economical photovoltaics with high power conversion efficiencies and better durability. The best fitting of the current-voltage curve to the theoretical equation allowed us to evaluate the series resistor RS, which values agree well with those derived from electrochemical impedance spectroscopy. Our results certified the validity of the equivalent circuit employed and the individual resistances obtained from EIS.
Ultrafast electron injection favorably proceeds from photoexcited dye molecule to TiO2 for the primary photovoltaic process in the DSSC. This electron injection should compete with other decays such as fluorescence emission or intramolecular nonradiative transitions. We estimated the rate constants for respective pathways from push-pull type organic dyes and compared the fluorescence lifetimes of dyes between isolated and adsorbed species.

Academic Significance and Societal Importance of the Research Achievements

軽量で低コストの色素増感太陽電池(DSSC)とペロブスカイト太陽電池(PVSC)は典型的なメゾスコピック太陽電池であり、フレキシブル基板の併用による住宅建材やモバイル機器への応用が期待されている。本研究成果により(1)内部電力損失の少ない長寿命のDSSCの製作、および(2)鉛フリーで色彩可変のPVSCの開発という目標に向けて、面積が約 0.25 cm2でエネルギー変換効率が約 10%のセルの安定供給、分子レベルでの発電機構の解明、およびレーザーと電子顕微鏡を用いた評価技術の確立への道筋が拓かれた。とくに、電子や励起子の生成、輸送、消滅現象に対する高速光検出よるアプローチが確立された。

Report

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

    (17 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results) Presentation (12 results) (of which Int'l Joint Research: 6 results) Remarks (1 results)

  • [Int'l Joint Research] Kasetsart University(タイ)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Kasetsart University(Thailand)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Analyses of Parameters Affecting the Fill Factors of Dye Sensitizing Solar Cells2020

    • Author(s)
      Koichiro Mitsuke, Ryohei Watai, Katsunari Takuma, Takumu Fujiya
    • Journal Title

      Proceedings on International Symposium on Environmental-Life Science and Nanoscales Technology 2019 (ISENT 2019)

      Volume: 2

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Density functional theory study of adsorption geometries and electronic structures of azo-dye-based molecules on anatase TiO2 surface for dye-sensitized solar cell applications2017

    • Author(s)
      1.Pongthep Prajongtat, Songwut Suramitr, Somkiat Nokbin, Koichi Nakajima, Koichiro Mitsuke, Supa Hannongbua
    • Journal Title

      Journal of Molecular Graphics and Modelling

      Volume: 76 Pages: 551-561

    • DOI

      10.1016/j.jmgm.2017.06.002

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 気/水界面上のC60脂肪酸混合薄膜とそのLB転写膜におけるC60の分散状態2020

    • Author(s)
      小澤 奈々子・田沼 佑里・見附 孝一郎
    • Organizer
      日本化学会春季年会2020
    • Related Report
      2019 Annual Research Report
  • [Presentation] Temperature dependence of the current-voltage characteristics of organic solar cells2019

    • Author(s)
      Katsunari Takuma, Ryohei Watai, Takumu Fujiya, Ayano Higashimura, Koichiro Mitsuke
    • Organizer
      35th Symposium on Chemical Kinetics and Dynamics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Exciton dissociation to charge carriers in perovskite solar cells2018

    • Author(s)
      SAITO, Yuki; MITSUKE, Koichiro
    • Organizer
      34th Symposium on Chemical Kinetics and Dynamics (Kyoto)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Impedance analyses for the interface of nanostructures in dye-sensitized solar cells2018

    • Author(s)
      WATAI, Ryohei; FUJIYA, Takumu; MITSUKE, Koichiro
    • Organizer
      34th Symposium on Chemical Kinetics and Dynamics (Kyoto)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] ペロブスカイト接合面におけるエキシトンの電荷分離2018

    • Author(s)
      齋藤 祐希,出島 康琢,東村 綾乃,見附 孝一郎
    • Organizer
      第12回分子科学討論会(福岡)
    • Related Report
      2018 Research-status Report
  • [Presentation] Transient emission spectroscopy of dye molecules adsorbed on metal oxide semiconductor and perovskite crystals junctioned to carrier transport materials2018

    • Author(s)
      MITSUKE, Koichiro; WATANABE, Kouhei; TAKAYANAGI, Kohei; SAITO, Yuki
    • Organizer
      日本化学会春季年会 ATPポスター 2018年3月
    • Related Report
      2017 Research-status Report
  • [Presentation] Syntheses of ZnO nanorods on glass or flexible substrates utilized for manufacturing dye-sensitized solar cells2017

    • Author(s)
      MASUOKA, Yuta; HANAYAMA, Shinnosuke; GOMI, Tomoki; NAITO, Tomotaka; MITSUKE, Koichiro
    • Organizer
      33rd Symposium on Chemical Kinetics and Dynamics (Nagoya)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Design and construction of multilayer TiO2 thin films used for photovoltaic electrodes2017

    • Author(s)
      FUJIYA, Takumu; INUZUKA, Takuya; MITSUKE, Koichiro
    • Organizer
      33rd Symposium on Chemical Kinetics and Dynamics (Nagoya)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Transient emission spectroscopy of the D-π-A type organic dyes adsorbed on metal oxide semiconductor nanoparticles2017

    • Author(s)
      WATANABE, Kouhei; YOSHIDA, Akira; TATSUNO, Yo; MITSUKE, Koichiro; TAKAHASHI, Katsuya; HASHIMOTO, Masashi
    • Organizer
      33rd Symposium on Chemical Kinetics and Dynamics (Nagoya)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 金属酸化物半導体に吸着したD-π-A型色素分子の過渡発光分光2017

    • Author(s)
      渡邉 晃平・高柳 康平・吉田 輝・見附 孝一郎・高橋 克弥・橋本 雅司
    • Organizer
      2017年光化学討論会(仙台)2017年9月
    • Related Report
      2017 Research-status Report
  • [Presentation] 酸化亜鉛ナノロッドによる色素増感太陽電池のインピーダンス解析2017

    • Author(s)
      増岡優太、渡井綾平、見附孝一郎
    • Organizer
      第11回分子科学討論会(仙台)2017年9月
    • Related Report
      2017 Research-status Report
  • [Presentation] 色素増感太陽電池の陽極における光触媒粉末を用いた光反射層の作製と評価2017

    • Author(s)
      犬塚拓哉、藤谷拓夢、見附孝一郎
    • Organizer
      第11回分子科学討論会(仙台)2017年9月
    • Related Report
      2017 Research-status Report
  • [Remarks] 城西大学理学部化学科研究室紹介

    • URL

      https://www.josai.ac.jp/education/science/chemistry_dep/laboratory/index.html

    • Related Report
      2019 Annual Research Report

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

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