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Development of higly stable perovskite solar cells with Ge doping

Research Project

Project/Area Number 21K14733
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 36020:Energy-related chemistry
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Kogo Atsushi  国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 主任研究員 (40747870)

Project Period (FY) 2021-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsペロブスカイト太陽電池 / 正孔輸送材料
Outline of Research at the Start

20%超の高いエネルギー変換効率を示すCH3NH3PbI3ペロブスカイト太陽電池は、有機イオンが分解されやすく光、熱に対し耐久性が低い。そのため、CH3NH3イオンのかわりにCsイオンを用いたCsPbI3ペロブスカイト結晶の研究開発が進められている。本研究では、CsPbI3の安定性改善のため、GeイオンをドーピングしたCsPb1-xGexI3ペロブスカイト結晶を開発し、高耐久な太陽電池素子を作製する。

Outline of Final Research Achievements

Alfa phase of CsPbI3 was stabilized by Ge ion doping. Alfa phase CsPb0.8Ge0.2I3 was yielded by 90 oC anealing. Further the Alfa phase CsPb0.8Ge0.2I3 was stable at room temperature. On the other hand, alfa phase CsPb0.8Ge0.2I3 exhibited phase transition in humid atmosphere. Hence, we developed CuSCN hole transport layers, which is coated on and protect perovskite underlayer.

Academic Significance and Societal Importance of the Research Achievements

ペロブスカイト太陽電池は、火力発電に近い~10円/kWhの低コスト発電が期待されているが、耐久性が低いため改善が検討されている。CH3NH3PbI3ペロブスカイト結晶のCH3NH3+イオンの代わりに無機カチオンを導入したCsPbI3結晶を光吸収材に用いた研究が行われているが、イオンの分解は抑えられるものの、常温で相転移を起こし太陽電池特性が数時間から数日で低下する。そのため、本研究でGeドーピングを行い、相転移を抑制できたことはペロブスカイト太陽電池の実用化に向けて重要な知見である。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (8 results)

All 2023 2022

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Effect of Humidity on Crystal Growth of CuSCN for Perovskite Solar Cell Applications2023

    • Author(s)
      Kogo Atsushi、Murakami Takurou N.
    • Journal Title

      ChemPhysChem

      Volume: 24 Issue: 8

    • DOI

      10.1002/cphc.202200832

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Improvement of perovskite solar cell performance by oleylamine treatment of CuSCN hole-transport layer2023

    • Author(s)
      Komazawa Yuto、Uchida Shiro、Murakami Takurou N.、Kogo Atsushi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 62 Issue: 5 Pages: 050902-050902

    • DOI

      10.35848/1347-4065/accda6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Performance and stability improvement of perovskite solar cells using a nanopillar conductive polymer formed via electropolymerisation2023

    • Author(s)
      Shirasaka Tomoya、Kogo Atsushi、Koura Setsuko
    • Journal Title

      Nanoscale

      Volume: 15 Issue: 10 Pages: 4839-4842

    • DOI

      10.1039/d2nr07193b

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Germanium ion doping of CsPbI3 to obtain inorganic perovskite solar cells with low temperature processing2022

    • Author(s)
      Kogo Atsushi、Yamamoto Kohei、Murakami Takurou N.
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Issue: 2 Pages: 020904-020904

    • DOI

      10.35848/1347-4065/ac4927

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Crystal Growth Management of CuSCN for Perovskite Solar Cells2023

    • Author(s)
      古郷敦史
    • Organizer
      Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP23)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] CuSCN正孔輸送層ペロブスカイト太陽電池へのオレイルアミン処理効果による性能改善2022

    • Author(s)
      駒澤雄飛、村上拓郎、内田史朗、古郷敦史
    • Organizer
      第12回 CSJ化学フェスタ2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] CuSCN正孔輸送層へのオレイルアミン処理によるペロブスカイト太陽電池の性能改善2022

    • Author(s)
      駒澤雄飛、村上拓郎、内田史朗、古郷敦史
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] CuSCN正孔輸送膜の高湿度エイジングによるペロブスカイト太陽電池の高性能化2022

    • Author(s)
      古郷敦史、村上拓郎
    • Organizer
      2022年第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report

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Published: 2021-04-28   Modified: 2024-01-30  

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