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Regulation of the luminescence mechanism of two-dimensional tin halide perovskites

Author

Listed:
  • Tianju Zhang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Chaocheng Zhou

    (Shanghai University of Electric Power
    Shanghai Jiao Tong University)

  • Xuezhen Feng

    (Southern University of Science and Technology)

  • Ningning Dong

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Hong Chen

    (Southern University of Science and Technology)

  • Xianfeng Chen

    (Shanghai Jiao Tong University
    Shandong Normal University)

  • Long Zhang

    (University of Chinese Academy of Sciences)

  • Jia Lin

    (Shanghai University of Electric Power)

  • Jun Wang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    CAS Center for Excellence in Ultra-intense Laser Science)

Abstract

Two-dimensional (2D) Sn-based perovskites are a kind of non-toxic environment-friendly luminescent material. However, the research on the luminescence mechanism of this type of perovskite is still very controversial, which greatly limits the further improvement and application of the luminescence performance. At present, the focus of controversy is defects and phonon scattering rates. In this work, we combine the organic cation control engineering with temperature-dependent transient absorption spectroscopy to systematically study the interband exciton relaxation pathways in layered A2SnI4 (A = PEA+, BA+, HA+, and OA+) structures. It is revealed that exciton-phonon scattering and exciton-defect scattering have different effects on exciton relaxation. Our study further confirms that the deformation potential scattering by charged defects, not by the non-polar optical phonons, dominates the excitons interband relaxation, which is largely different from the Pb-based perovskites. These results enhance the understanding of the origin of the non-radiative pathway in Sn-based perovskite materials.

Suggested Citation

  • Tianju Zhang & Chaocheng Zhou & Xuezhen Feng & Ningning Dong & Hong Chen & Xianfeng Chen & Long Zhang & Jia Lin & Jun Wang, 2022. "Regulation of the luminescence mechanism of two-dimensional tin halide perovskites," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-021-27663-0
    DOI: 10.1038/s41467-021-27663-0
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    References listed on IDEAS

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    1. Letian Dou & Yang (Micheal) Yang & Jingbi You & Ziruo Hong & Wei-Hsuan Chang & Gang Li & Yang Yang, 2014. "Solution-processed hybrid perovskite photodetectors with high detectivity," Nature Communications, Nature, vol. 5(1), pages 1-6, December.
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    Cited by:

    1. Tianhong Chen & Dongpeng Yan, 2024. "Full-color, time-valve controllable and Janus-type long-persistent luminescence from all-inorganic halide perovskites," Nature Communications, Nature, vol. 15(1), pages 1-13, December.

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