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Homogenizing out-of-plane cation composition in perovskite solar cells

Author

Listed:
  • Zheng Liang

    (Chinese Academy of Sciences
    University of Science and Technology of China (USTC))

  • Yong Zhang

    (Southern University of Science and Technology (SUSTech)
    Southern University of Science and Technology (SUSTech))

  • Huifen Xu

    (Chinese Academy of Sciences
    University of Science and Technology of China (USTC))

  • Wenjing Chen

    (University of Science and Technology of China (USTC)
    University of Science and Technology of China (USTC))

  • Boyuan Liu

    (Chinese Academy of Sciences
    University of Science and Technology of China (USTC))

  • Jiyao Zhang

    (Southern University of Science and Technology (SUSTech)
    Southern University of Science and Technology (SUSTech))

  • Hui Zhang

    (Chinese Academy of Sciences
    University of Science and Technology of China (USTC))

  • Zihan Wang

    (Chinese Academy of Sciences
    University of Science and Technology of China (USTC))

  • Dong-Ho Kang

    (Sungkyunkwan University (SKKU)
    Sungkyunkwan University)

  • Jianrong Zeng

    (Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Advanced Research Institute (SARI), and Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS))

  • Xingyu Gao

    (Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Advanced Research Institute (SARI), and Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS))

  • Qisheng Wang

    (Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Advanced Research Institute (SARI), and Shanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS))

  • Huijie Hu

    (Chinese Academy of Sciences
    University of Science and Technology of China (USTC))

  • Hongmin Zhou

    (University of Science and Technology of China (USTC)
    University of Science and Technology of China (USTC))

  • Xiangbin Cai

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Xingyou Tian

    (Chinese Academy of Sciences)

  • Peter Reiss

    (University Grenoble-Alpes, CEA, CNRS, INP, IRIG/SyMMES, STEP)

  • Baomin Xu

    (Southern University of Science and Technology (SUSTech)
    Southern University of Science and Technology (SUSTech))

  • Thomas Kirchartz

    (IEK5-Photovoltaics, Forschungszentrum Jülich
    University of Duisburg-Essen)

  • Zhengguo Xiao

    (University of Science and Technology of China (USTC)
    University of Science and Technology of China (USTC))

  • Songyuan Dai

    (North China Electric Power University (NCEPU))

  • Nam-Gyu Park

    (Sungkyunkwan University (SKKU)
    Sungkyunkwan University)

  • Jiajiu Ye

    (Chinese Academy of Sciences
    IEK5-Photovoltaics, Forschungszentrum Jülich)

  • Xu Pan

    (Chinese Academy of Sciences)

Abstract

Perovskite solar cells with the formula FA1−xCsxPbI3, where FA is formamidinium, provide an attractive option for integrating high efficiency, durable stability and compatibility with scaled-up fabrication. Despite the incorporation of Cs cations, which could potentially enable a perfect perovskite lattice1,2, the compositional inhomogeneity caused by A-site cation segregation is likely to be detrimental to the photovoltaic performance of the solar cells3,4. Here we visualized the out-of-plane compositional inhomogeneity along the vertical direction across perovskite films and identified the underlying reasons for the inhomogeneity and its potential impact for devices. We devised a strategy using 1-(phenylsulfonyl)pyrrole to homogenize the distribution of cation composition in perovskite films. The resultant p–i–n devices yielded a certified steady-state photon-to-electron conversion efficiency of 25.2% and durable stability.

Suggested Citation

  • Zheng Liang & Yong Zhang & Huifen Xu & Wenjing Chen & Boyuan Liu & Jiyao Zhang & Hui Zhang & Zihan Wang & Dong-Ho Kang & Jianrong Zeng & Xingyu Gao & Qisheng Wang & Huijie Hu & Hongmin Zhou & Xiangbin, 2023. "Homogenizing out-of-plane cation composition in perovskite solar cells," Nature, Nature, vol. 624(7992), pages 557-563, December.
    • Handle: RePEc:nat:nature:v:624:y:2023:i:7992:d:10.1038_s41586-023-06784-0
    DOI: 10.1038/s41586-023-06784-0
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