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Degradation mechanisms of perovskite solar cells under vacuum and one atmosphere of nitrogen

Author

Listed:
  • Renjun Guo

    (Technische Universität München)

  • Dan Han

    (Ludwig-Maximilians-Universität München)

  • Wei Chen

    (Technische Universität München
    Southern University of Science and Technology)

  • Linjie Dai

    (University of Cambridge)

  • Kangyu Ji

    (University of Cambridge)

  • Qiu Xiong

    (Chinese Academy of Sciences)

  • Saisai Li

    (Nankai University)

  • Lennart K. Reb

    (Technische Universität München)

  • Manuel A. Scheel

    (Technische Universität München)

  • Shambhavi Pratap

    (Technische Universität München)

  • Nian Li

    (Technische Universität München)

  • Shanshan Yin

    (Technische Universität München)

  • Tianxiao Xiao

    (Technische Universität München)

  • Suzhe Liang

    (Technische Universität München)

  • Anna Lena Oechsle

    (Technische Universität München)

  • Christian L. Weindl

    (Technische Universität München)

  • Matthias Schwartzkopf

    (Deutsches Elektronen-Synchrotron (DESY))

  • Hubert Ebert

    (Ludwig-Maximilians-Universität München)

  • Peng Gao

    (Chinese Academy of Sciences)

  • Kai Wang

    (Southern University of Science and Technology)

  • Mingjian Yuan

    (Nankai University)

  • Neil C. Greenham

    (University of Cambridge)

  • Samuel D. Stranks

    (University of Cambridge
    University of Cambridge)

  • Stephan V. Roth

    (Deutsches Elektronen-Synchrotron (DESY)
    KTH Royal Institute of Technology)

  • Richard H. Friend

    (University of Cambridge)

  • Peter Müller-Buschbaum

    (Technische Universität München
    Technische Universität München)

Abstract

Extensive studies have focused on improving the operational stability of perovskite solar cells, but few have surveyed the fundamental degradation mechanisms. One aspect overlooked in earlier works is the effect of the atmosphere on device performance during operation. Here we investigate the degradation mechanisms of perovskite solar cells operated under vacuum and under a nitrogen atmosphere using synchrotron radiation-based operando grazing-incidence X-ray scattering methods. Unlike the observations described in previous reports, we find that light-induced phase segregation, lattice shrinkage and morphology deformation occur under vacuum. Under nitrogen, only lattice shrinkage appears during the operation of solar cells, resulting in better device stability. The different behaviour under nitrogen is attributed to a larger energy barrier for lattice distortion and phase segregation. Finally, we find that the migration of excessive PbI2 to the interface between the perovskite and the hole transport layer degrades the performance of devices under vacuum or under nitrogen.

Suggested Citation

  • Renjun Guo & Dan Han & Wei Chen & Linjie Dai & Kangyu Ji & Qiu Xiong & Saisai Li & Lennart K. Reb & Manuel A. Scheel & Shambhavi Pratap & Nian Li & Shanshan Yin & Tianxiao Xiao & Suzhe Liang & Anna Le, 2021. "Degradation mechanisms of perovskite solar cells under vacuum and one atmosphere of nitrogen," Nature Energy, Nature, vol. 6(10), pages 977-986, October.
  • Handle: RePEc:nat:natene:v:6:y:2021:i:10:d:10.1038_s41560-021-00912-8
    DOI: 10.1038/s41560-021-00912-8
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    Citations

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    Cited by:

    1. Jiaxin Pan & Ziming Chen & Tiankai Zhang & Beier Hu & Haoqing Ning & Zhu Meng & Ziyu Su & Davide Nodari & Weidong Xu & Ganghong Min & Mengyun Chen & Xianjie Liu & Nicola Gasparini & Saif A. Haque & Pi, 2023. "Operando dynamics of trapped carriers in perovskite solar cells observed via infrared optical activation spectroscopy," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Zengqi Huang & Lin Li & Tingqing Wu & Tangyue Xue & Wei Sun & Qi Pan & Huadong Wang & Hongfei Xie & Jimei Chi & Teng Han & Xiaotian Hu & Meng Su & Yiwang Chen & Yanlin Song, 2023. "Wearable perovskite solar cells by aligned liquid crystal elastomers," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    3. Xiang, Huimin & Liu, Pengyun & Ran, Ran & Wang, Wei & Zhou, Wei & Shao, Zongping, 2022. "Two-dimensional Dion-Jacobson halide perovskites as new-generation light absorbers for perovskite solar cells," Renewable and Sustainable Energy Reviews, Elsevier, vol. 166(C).
    4. Nian Li & Shambhavi Pratap & Volker Körstgens & Sundeep Vema & Lin Song & Suzhe Liang & Anton Davydok & Christina Krywka & Peter Müller-Buschbaum, 2022. "Mapping structure heterogeneities and visualizing moisture degradation of perovskite films with nano-focus WAXS," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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