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Amorphous (lysine)2PbI2 layer enhanced perovskite photovoltaics

Author

Listed:
  • Yehui Wen

    (Zhejiang University
    Soochow University)

  • Tianchi Zhang

    (Zhejiang University
    Soochow University)

  • Xingtao Wang

    (Huaneng Clean Energy Research Institute)

  • Tiantian Liu

    (Xi’an University of Architecture and Technology)

  • Yu Wang

    (Linköping University)

  • Rui Zhang

    (Linköping University)

  • Miao Kan

    (East China University of Science and Technology)

  • Li Wan

    (Max Planck Institute of Microstructure Physics)

  • Weihua Ning

    (Soochow University)

  • Yong Wang

    (Zhejiang University)

  • Deren Yang

    (Zhejiang University)

Abstract

Passivation materials play a crucial role in a wide range of high-efficiency, high-stability photovoltaic applications based on crystalline silicon and state-of-the-art perovskite materials. Currently, for perovskite photovoltaic, the mainstream passivation strategies routinely rely on crystalline materials. Herein, we have invented a new amorphous (lysine)2PbI2 layer-enhanced halide perovskite. By utilizing a solid phase reaction between PbI2 and lysine molecule, an amorphous (lysine)2PbI2 layer is formed at surface/grain boundaries in the perovskite films. The amorphous (lysine)2PbI2 with fewer dangling bonds can effectively neutralize surface/interface defects, achieving an impressive efficiency of 26.27% (certified 25.94%). Moreover, this amorphous layer not only reduces crystal lattice stress but also functions as a barrier against the decomposition of organic components, leading to suppressed de-structuring of perovskite and highly stable perovskite solar cells.

Suggested Citation

  • Yehui Wen & Tianchi Zhang & Xingtao Wang & Tiantian Liu & Yu Wang & Rui Zhang & Miao Kan & Li Wan & Weihua Ning & Yong Wang & Deren Yang, 2024. "Amorphous (lysine)2PbI2 layer enhanced perovskite photovoltaics," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-51551-y
    DOI: 10.1038/s41467-024-51551-y
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    References listed on IDEAS

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