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Excess charge-carrier induced instability of hybrid perovskites

Author

Listed:
  • Yuze Lin

    (University of North Carolina)

  • Bo Chen

    (University of Nebraska-Lincoln)

  • Yanjun Fang

    (University of Nebraska-Lincoln)

  • Jingjing Zhao

    (University of North Carolina
    University of Nebraska-Lincoln)

  • Chunxiong Bao

    (University of Nebraska-Lincoln)

  • Zhenhua Yu

    (University of North Carolina)

  • Yehao Deng

    (University of North Carolina)

  • Peter N. Rudd

    (University of North Carolina)

  • Yanfa Yan

    (The University of Toledo)

  • Yongbo Yuan

    (Central South University)

  • Jinsong Huang

    (University of North Carolina
    University of Nebraska-Lincoln)

Abstract

Identifying the origin of intrinsic instability for organic–inorganic halide perovskites (OIHPs) is crucial for their application in electronic devices, including solar cells, photodetectors, radiation detectors, and light-emitting diodes, as their efficiencies or sensitivities have already been demonstrated to be competitive with commercial available devices. Here we show that free charges in OIHPs, whether generated by incident light or by current-injection from electrodes, can reduce their stability, while efficient charge extraction effectively stabilizes the perovskite materials. The excess of both holes and electrons reduce the activation energy for ion migration within OIHPs, accelerating the degradation of OIHPs, while the excess holes and electrons facilitate the migration of cations or anions, respectively. OIHP solar cells capable of efficient charge-carrier extraction show improved light stability under regular operation conditions compared to an open-circuit condition where the photo-generated charges are confined in the perovskite layers.

Suggested Citation

  • Yuze Lin & Bo Chen & Yanjun Fang & Jingjing Zhao & Chunxiong Bao & Zhenhua Yu & Yehao Deng & Peter N. Rudd & Yanfa Yan & Yongbo Yuan & Jinsong Huang, 2018. "Excess charge-carrier induced instability of hybrid perovskites," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-07438-w
    DOI: 10.1038/s41467-018-07438-w
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    Cited by:

    1. Noor Titan Putri Hartono & Hans Köbler & Paolo Graniero & Mark Khenkin & Rutger Schlatmann & Carolin Ulbrich & Antonio Abate, 2023. "Stability follows efficiency based on the analysis of a large perovskite solar cells ageing dataset," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    2. Jin Wen & Yicheng Zhao & Pu Wu & Yuxuan Liu & Xuntian Zheng & Renxing Lin & Sushu Wan & Ke Li & Haowen Luo & Yuxi Tian & Ludong Li & Hairen Tan, 2023. "Heterojunction formed via 3D-to-2D perovskite conversion for photostable wide-bandgap perovskite solar cells," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    3. Hyungsoo Lee & Chan Uk Lee & Juwon Yun & Chang-Seop Jeong & Wooyong Jeong & Jaehyun Son & Young Sun Park & Subin Moon & Soobin Lee & Jun Hwan Kim & Jooho Moon, 2024. "A dual spin-controlled chiral two-/three-dimensional perovskite artificial leaf for efficient overall photoelectrochemical water splitting," Nature Communications, Nature, vol. 15(1), pages 1-15, December.

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