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Trapped charge-driven degradation of perovskite solar cells

Author

Listed:
  • Namyoung Ahn

    (Global Frontier Center for Multiscale Energy Systems, Seoul National University
    Seoul National University)

  • Kwisung Kwak

    (Global Frontier Center for Multiscale Energy Systems, Seoul National University
    Seoul National University)

  • Min Seok Jang

    (School of Electrical Engineering, Korea Advanced Institute of Science and Technology)

  • Heetae Yoon

    (Global Frontier Center for Multiscale Energy Systems, Seoul National University
    Seoul National University)

  • Byung Yang Lee

    (Korea University)

  • Jong-Kwon Lee

    (Global Frontier Center for Multiscale Energy Systems, Seoul National University)

  • Peter V. Pikhitsa

    (Global Frontier Center for Multiscale Energy Systems, Seoul National University)

  • Junseop Byun

    (Global Frontier Center for Multiscale Energy Systems, Seoul National University
    Seoul National University)

  • Mansoo Choi

    (Global Frontier Center for Multiscale Energy Systems, Seoul National University
    Seoul National University)

Abstract

Perovskite solar cells have shown unprecedent performance increase up to 22% efficiency. However, their photovoltaic performance has shown fast deterioration under light illumination in the presence of humid air even with encapulation. The stability of perovskite materials has been unsolved and its mechanism has been elusive. Here we uncover a mechanism for irreversible degradation of perovskite materials in which trapped charges, regardless of the polarity, play a decisive role. An experimental setup using different polarity ions revealed that the moisture-induced irreversible dissociation of perovskite materials is triggered by charges trapped along grain boundaries. We also identified the synergetic effect of oxygen on the process of moisture-induced degradation. The deprotonation of organic cations by trapped charge-induced local electric field would be attributed to the initiation of irreversible decomposition.

Suggested Citation

  • Namyoung Ahn & Kwisung Kwak & Min Seok Jang & Heetae Yoon & Byung Yang Lee & Jong-Kwon Lee & Peter V. Pikhitsa & Junseop Byun & Mansoo Choi, 2016. "Trapped charge-driven degradation of perovskite solar cells," Nature Communications, Nature, vol. 7(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13422
    DOI: 10.1038/ncomms13422
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    Cited by:

    1. Sajid, Sajid & Huang, Hao & Ji, Jun & Jiang, Haoran & Duan, Mingjun & Liu, Xin & Liu, Benyu & Li, Meicheng, 2021. "Quest for robust electron transporting materials towards efficient, hysteresis-free and stable perovskite solar cells," Renewable and Sustainable Energy Reviews, Elsevier, vol. 152(C).
    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.

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