Synergistic Hematite‐Fullerene Electron‐Extracting Layers for Improved Efficiency and Stability in Perovskite Solar Cells

DOI Web Site Web Site 被引用文献2件
  • Qinzhi Hou
    State Key Laboratory of Electronic Thin Film and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 P.R. China
  • Jing Ren
    State Key Laboratory of Electronic Thin Film and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 P.R. China
  • Haijun Chen
    State Key Laboratory of Electronic Thin Film and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 P.R. China
  • Pan Yang
    Institute of Materials Chinese Academy of Engineering Physics Jiangyou 610200 P.R. China
  • Qian Shao
    College of Chemical and Environmental Engineering Shandong University of Science and Technology Qingdao 266590 P.R. China
  • Min Zhao
    Integrated Composites Lab (ICL), Department of Chemical & Biomolecular Engineering University of Tennessee, Knoxville Tennessee 37966 USA
  • Xiaochong Zhao
    Institute of Materials Chinese Academy of Engineering Physics Jiangyou 610200 P.R. China
  • Hongcai He
    State Key Laboratory of Electronic Thin Film and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 P.R. China
  • Ning Wang
    State Key Laboratory of Electronic Thin Film and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 P.R. China
  • Qiang Luo
    State Key Laboratory of Electronic Thin Film and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 P.R. China
  • Zhanhu Guo
    Integrated Composites Lab (ICL), Department of Chemical & Biomolecular Engineering University of Tennessee, Knoxville Tennessee 37966 USA

書誌事項

公開日
2018-01-25
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/celc.201701054
公開者
Wiley

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説明

<jats:title>Abstract</jats:title><jats:p>Hematite, α‐Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>, is arising as a promising electron‐extraction material in perovskite solar cells, yet present α‐Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>‐based perovskite solar cells still show unsatisfactory efficiencies owing to large charge recombination. In this contribution, phenyl‐C61‐butyric acid methyl ester (PCBM) and α‐Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> synergistically worked together as the electron transport layer (ETL) in planar heterojunction perovskite solar cells. The introduction of fullerene at the top of the α‐Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> ETL improved the crystallinity of CH<jats:sub>3</jats:sub>NH<jats:sub>3</jats:sub>PbI<jats:sub>3</jats:sub> perovskite and facilitated electron extraction. As a consequence, a substantially retarded charge recombination largely boosted the short‐circuit current density and power conversion efficiency of perovskite solar cells. The optimized perovskite solar cells with α‐Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>/PCBM ETL showed a competitive power conversion efficiency of 14.2 %, which is 20 % higher than that of pristine α‐Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>‐based solar cells. Moreover, α‐Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>/PCBM‐based perovskite solar cells exhibited improved stability compared to the pristine α‐Fe<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>‐based devices, retaining over 95 % of their initial values after 45 days storage in dark in humid air.</jats:p>

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