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Elucidation of low efficiency for Sn perovskite solar cells and enhancement of efficiency by heteronanointerface architecture

Research Project

Project/Area Number 17H03106
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Organic and hybrid materials
Research InstitutionThe University of Electro-Communications (2019)
Kyushu Institute of Technology (2017-2018)

Principal Investigator

Shuzi Hayase  電気通信大学, i-パワードエネルギー・システム研究センター, 特任教授 (80336099)

Co-Investigator(Kenkyū-buntansha) 沈 青  電気通信大学, 大学院情報理工学研究科, 教授 (50282926)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2019: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2018: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2017: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Keywords光電変換素子 / 太陽電池 / 粒界 / ヘテロ界面 / 欠陥 / ペロブスカイト / 錫 / 鉛フリー / 錫系 / 電荷トラップ / 効率 / 開放電圧 / 発光寿命 / Sn / 時間分解 / キャリア密度 / 格子 / ひずみ / 移動度 / レドックス
Outline of Final Research Achievements

The purpose of this research is to propose the way to enhance the efficiency of Pb free perovskite solar cells, namely, Sn PVK solar cells. Focus was put on decreasing defect density of PVK crystals including the grain boundary and the heterointerfaces. In order to make clear the performance of Sn PVK layer, no metal dopant was added in B site of ABX3 structure. We aimed at unveiling items retarding the efficiency-enhancement for the Sn-PVK. We found the following items for the efficiency enhancement. 1. Inverted structures are recommended to avoid the direct contact between Sn-PVK and inorganic oxide semiconductors, 2. To reduce the crystal lattice strain by optimizing the size of A site gives higher efficiency, 3. Grain boundary passivation is effective, 4. Addition of reducing agents, such as Sm ion, are useful because of the decrease in the defect density associated with Sn4+.

Academic Significance and Societal Importance of the Research Achievements

鉛ペロブスカイト(PVK)は低温・塗布で作製できる次世代太陽電池として期待されているが鉛イオンがPVK層に含まれているという問題点が指摘されていた。計算上は錫PVKは鉛PVKと同等以上の効率が期待できるが実験的には鉛PVKより性能は劣っていた。本研究でPVK層の粒界やヘテロ界面に生ずる欠陥構造、キャリアダイナミックス、光電変換特性を系統的に調べ、学術的に重要な電荷分離効率という観点から、性能向上を阻害している因子を明らかにすることができた。これにより錫PVK太陽電池の高効率指針が提案できた。本研究の成果は鉛を使わない新高効率太陽電池完成のための重要な知見を与え、SDGs社会創生に貢献できる。

Report

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

    (20 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (15 results) (of which Int'l Joint Research: 5 results,  Invited: 4 results) Remarks (2 results)

  • [Int'l Joint Research] Chung-Ang University(韓国)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Enhanced device performance with passivation of the TiO2 surface using a carboxylic acid fullerene monolayer for a SnPb perovskite solar cell with a normal planar structure2020

    • Author(s)
      6.Hamada, Kengo; Tanaka, Ryo; Kamarudin, Muhammad Akmal; Shen, Qing; Iikubo, Satoshi; Minemoto, Takashi; Yoshino, Kenji; Toyoda, Taro; Ma, Tingli; Kang, Dong-won; Hayase, Shuzi
    • Journal Title

      ACS Appl. Mater. Interfaces

      Volume: 12 Issue: 15 Pages: 17776-17782

    • DOI

      10.1021/acsami.0c01411

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Pb-free Sn perovskite solar cells doped with Samarium iodide2019

    • Author(s)
      Kengo Hamada et.al.
    • Journal Title

      Chem. Lett.

      Volume: -

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] Lead-free tin halide perovskite solar cells beyond 10 % efficiency2020

    • Author(s)
      Muhammad Akmal Kamarudin, Daisuke Hirotani, Zhen Wang, Kengo Hamada, Kohei Nishimura, Qing Shen, Satoshi Iikubo, Takashi Minemoto, Kenji Yoshino, Shuzi Hayase
    • Organizer
      Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP20)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Expected innovative materials for printable solar cells2019

    • Author(s)
      S. Hayase
    • Organizer
      Workshop on solar cells in China Jiliang University
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Suppressing surface recombination in tin-based perovskite solar cells2019

    • Author(s)
      Muhammad Akmal Kamarudin, Daisuke Hirotani, Kengo Hamada, Kohei Nishimura, Satoshi Iikubo, Qing Shen, Taro Toyoda, Takashi Minemoto, Kenji Yoshino, Shuzi Hayase
    • Organizer
      The International Conference on Molecular Electronics and Bioelectronics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] FAMAPbI3 perovskiteにおける結晶ひずみと電子物性2018

    • Author(s)
      廣谷太佑その他
    • Organizer
      応用物理学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 鉛フリーPerovskite太陽電池の性能改善に関する研究2018

    • Author(s)
      濱田健吾 その他
    • Organizer
      応用物理学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Effect of lattice strain inFAMAPbI3 on photovoltaic efficiency for perovskite solar cells2018

    • Author(s)
      Daiske Hirotani, et. al.,
    • Organizer
      7th Korea-Japan Joint Seminar on PV 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pb free-Sn-perovskite 太陽電池の高効率化2018

    • Author(s)
      濱田健吾ら
    • Organizer
      NICE研究会講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] サイト置換によるSn-Perovskite太陽電池特性と結晶歪みの相関2018

    • Author(s)
      西村滉平ら
    • Organizer
      応用物理学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Enhancement of Efficiency for Sn-Perovskite Solar Cell from View Point of Hetero-Interface Structure2017

    • Author(s)
      Shuzi Hayase
    • Organizer
      MRS spring meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Enhancement of efficiency for perovskite solar cells consisting of Sn2017

    • Author(s)
      Shuzi Hayase , et al.,
    • Organizer
      IEEE PVSEC2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] Br添加による光吸収端制御を行ったSn系ペロブスカイト太陽電池2017

    • Author(s)
      早瀬修二 他
    • Organizer
      化学関連支部合同九州大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Enhancement of efficiency for perovskite solar cells consisting of Sn from view point of interfacial and crystal architecture2017

    • Author(s)
      Shuzi Hayase
    • Organizer
      IUMRS-ICAM 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ヘテロ界面構造とSn系混合金属ペロブスカイト太陽電池2017

    • Author(s)
      早瀬修二
    • Organizer
      応用物理学会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] TiO2/Perovskite 界面修飾による Sn 系ペロブスカイト太陽電池特性の改善2017

    • Author(s)
      濱田健吾 他
    • Organizer
      応用物理学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] TiO2/Perovskite界面修飾によるSn系ペロブスカイト太陽電池特性の改善2017

    • Author(s)
      濱田健吾 他
    • Organizer
      電気化学会春季大会
    • Related Report
      2017 Annual Research Report
  • [Remarks]

    • URL

      http://www.life.kyutech.ac.jp/~hayase/

    • Related Report
      2018 Annual Research Report
  • [Remarks] 早瀬研究室ホームページ

    • URL

      http://www.life.kyutech.ac.jp/~hayase/

    • Related Report
      2017 Annual Research Report

URL: 

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

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