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Quantitative elucidation of photo-generated charge carrier mobility and transfer dynamics in perovskite semiconductor films

Research Project

Project/Area Number 19H02813
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 36020:Energy-related chemistry
Research InstitutionOsaka University

Principal Investigator

Tachibana Yasuhiro  大阪大学, 大学院理学研究科, 招へい教授 (30359856)

Co-Investigator(Kenkyū-buntansha) 関 修平  京都大学, 工学研究科, 教授 (30273709)
豊田 岐聡  大阪大学, 大学院理学研究科, 教授 (80283828)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2021: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2020: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2019: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Keywords太陽電池 / 光触媒 / 超高速分光 / ハロゲン化金属ペロブスカイト / 非鉛ペロブスカイト / 電荷移動反応 / ペロブスカイト太陽電池 / 高速分光 / レーザー分光 / 金属ハライドペロブスカイト
Outline of Research at the Start

ハロゲン化金属ペロブスカイト半導体は、簡便な化学製膜プロセス法によって膜を作製可能であり、高光吸収効率、高速キャリア輸送特性並びに長寿命キャリア特性を持つことから、次世代の太陽電池などの光電子デバイスに有力な材料として注目を浴びている。これらのペロブスカイト層の特性を評価するために、時間分解分光法が有効である。そこで、本研究では、ハロゲン化金属ペロブスカイト層における光生成キャリアダイナミクスを様々な時間分解スペクトル測定法によって完全定量的に解明し、ペロブスカイト層のタイプ・形状・構造・界面制御の因子との相関を得て、高効率ペロブスカイト太陽電池を設計する指針を確立することを目的とする。

Outline of Final Research Achievements

The following three outcomes were obtained.
(1)As a result of studying charge carrier dynamics of lead halide perovskite films, charge carrier trapping occurs from 200 ps to 1 ns. We also found that it is possible to estimate charge carrier trap density by conducting excitation intensity dependence on electron-hole recombination dynamics.(2)We found that appropriate doping into the spiro-OMeTAD layer does not influence charge separation rate and yield, however retards charge recombination rates.(3)CsSn2Br5 nanocubes were successfully synthesized. Surprisingly, Sn2+ in CsSn2Br5 perovskite is oxidized by water and oxygen molecules in air, forming Cs2SnBr6 perovskite structure. Furthermore, Cs2SnBr6 nanocrystals were de-stabilised by a small amount of water and oxygen molecules inside non-polar solvent.

Academic Significance and Societal Importance of the Research Achievements

本研究課題の成果から、高効率ペロブスカイト太陽電池を設計するための有益な指針が得られた。
(1)キャリアのトラップ密度を見積もる方法が確立されたことから、トラップ密度の太陽電性能に与える影響を評価することが可能になった。(2)ホール・電子移動度が高い輸送層を選択することにより、太陽電池の開放端電圧とフィルファクタの向上が期待できる。(3)スズペロブスカイト太陽電池の高効率化のためには、水分と酸素と反応しないようにバッファ層を設ける必要がある。一方、水分と酸素存在下でも分解を抑制可能な組成を見つけることが必要である。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (24 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (4 results) Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 3 results) Presentation (16 results) (of which Int'l Joint Research: 16 results,  Invited: 13 results)

  • [Int'l Joint Research] RMIT University(オーストラリア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] RMIT University(オーストラリア)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Cologne(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] The University of Melbourne(オーストラリア)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Formation and Stability of Cs<sub>2</sub>SnBr<sub>6</sub> Perovskite Nanocrystals from CsSn<sub>2</sub>Br<sub>5</sub> Nanocubes2022

    • Author(s)
      Liu Maning、Abodya Mohamed、Dai Weisi、Kawawaki Tokuhisa、Sato Ryota、Saruyama Masaki、Teranishi Toshiharu、Tachibana Yasuhiro
    • Journal Title

      Journal of Photopolymer Science and Technology

      Volume: 35 Issue: 3 Pages: 199-204

    • DOI

      10.2494/photopolymer.35.199

    • ISSN
      0914-9244, 1349-6336
    • Year and Date
      2022-12-16
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Photo-Induced Charge Carrier Dynamics of Metal Halide Perovskite2022

    • Author(s)
      M. Liu, M. Abodya, W. Dai, T. Kawawaki, A. Shimazaki, R. Sato, M. Saruyama, T. Teranishi, A. Wakamiya,, Y. Tachibana
    • Journal Title

      Proc. AM-FPD 2022

      Volume: 1 Pages: 13-16

    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Journal Article] Primary photocatalytic water reduction and oxidation at an anatase TiO2 and Pt-TiO2 nanocrystalline electrode revealed by quantitative transient absorption studies2021

    • Author(s)
      Hanming Liua, Maning Liua, Ryosuke Nakamura, Yasuhiro Tachibana
    • Journal Title

      Applied Catalysis B: Environmental

      Volume: - Pages: 120226-120226

    • DOI

      10.1016/j.apcatb.2021.120226

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Influence of Hole Mobility on Charge Separation and Recombination Dynamics at Lead Halide Perovskite and Spiro-OMeTAD Interface2019

    • Author(s)
      Liu Maning、Liu Hanming、Padmaperuma Safna Ravindi、Endo Masaru、Shimazaki Ai、Wakamiya Atsushi、Tachibana Yasuhiro
    • Journal Title

      Journal of Photopolymer Science and Technology

      Volume: 32 Issue: 5 Pages: 727-733

    • DOI

      10.2494/photopolymer.32.727

    • NAID

      130007744381

    • ISSN
      0914-9244, 1349-6336
    • Year and Date
      2019-06-24
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Photo-Induced Charge Carrier Dynamics of Metal Halide Perovskite2022

    • Author(s)
      Yasuhiro Tachibana
    • Organizer
      The 29th International Workshop on Active-Matrix Flatpanel Displays and Devices -TFT Technologies and FPD Materials
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Metal halide perovskite nanocrystals: optical property and stability2022

    • Author(s)
      Yasuhiro Tachibana
    • Organizer
      The 39th International Conference of Photopolymer Science and Technology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Photo-induced charge carrier dynamics at semiconductor quantum dots / TiO2 interface2022

    • Author(s)
      Yasuhiro Tachibana
    • Organizer
      MRS 2022 Fall Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Formation and Stability of Cs2SnBr6 Perovskite Nanocrystals from CsSn2Br5 Nanocubes2022

    • Author(s)
      Keishiro Goshima, Mohamed Abodya, Weisi Dai, Tokuhisa Kawawaki, Ryota Sato, Masaki Saruyama, Toshiharu Teranishi and Yasuhiro Tachibana
    • Organizer
      MRS 2022 Fall Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Formation and Stability of Cs2SnBr6 Perovskite Nanocrystals from CsSn2Br5 Nanocubes2022

    • Author(s)
      Mohamed Abodya, Keishiro Goshima, Weisi Dai and Yasuhiro Tachibana
    • Organizer
      PVSEC 2023
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Photoinduced Charge Carrier Dynamics of Metal Chalcogenide Semiconductor Quantum Dot Sensitized TiO2 Film for Photovoltaic Application2021

    • Author(s)
      Yasuhiro Tachibana
    • Organizer
      The 38th International Conference of Photopolymer Science and Technology
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Transient absorption studies of photocatalytic water oxidation and reduction at TiO2 and Pt- TiO2 surface2021

    • Author(s)
      Yasuhiro Tachibana
    • Organizer
      14th International Meeting of Pacific Rim Ceramic Societies
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Comprehensive transient absorption studies of photocatalytic water oxidation and reduction at TiO2 and Pt- TiO2 surface2021

    • Author(s)
      Yasuhiro Tachibana
    • Organizer
      The 2021 International Chemical Congress of Pacific Basin Societies
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Transient Absorption and Emission Spectroscopies to Develop Solar Energy Conversion Devices2020

    • Author(s)
      Yasuhiro Tachibana
    • Organizer
      Ultrafast Spectroscopy Symposium at Swinburne
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Design of kinetically controlled solar energy conversion devices by time-resolved laser spectroscopies2019

    • Author(s)
      Yasuhiro Tachibana
    • Organizer
      the ENHANCE international symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Comprehensive kinetic analysis of photocatalytic water oxidation and reduction at TiO2 and Pt- TiO2 surface2019

    • Author(s)
      Yasuhiro Tachibana
    • Organizer
      The 2019 Spring Meeting of the European Materials Research Society (E-MRS)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Design of nanomaterial based solar energy conversion devices by time-resolved laser spectroscopies2019

    • Author(s)
      Yasuhiro Tachibana
    • Organizer
      China-Japan-Singapore Joint Symposium on Supramolecular Systems and Optoelectronic Functions
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Interfacial charge transfer and transport dynamics in perovskite solar cells2019

    • Author(s)
      Yasuhiro Tachibana
    • Organizer
      5th Global Congress & Expo on Materials Science & Engineering (GCEMSE-2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Structure Design of Metal Halide Perovskite Solar Cells by Charge Carrier Dynamics2019

    • Author(s)
      Yasuhiro Tachibana
    • Organizer
      The 36th International Conference of Photopolymer Science and Technology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Design of metal halide perovskite film using time-resolved laser spectroscopy for solar cell application2019

    • Author(s)
      Yasuhiro Tachibana
    • Organizer
      PacRim 13: The 13th Pacific Rim Conference of Ceramic Societies
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Design of metal halide perovskite films by time-resolved laser spectroscopies2019

    • Author(s)
      Yasuhiro Tachibana
    • Organizer
      Photovoltaics Workshop at Monash University
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2019-04-18   Modified: 2024-01-30  

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