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How antisolvent miscibility affects perovskite film wrinkling and photovoltaic properties

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Listed:
  • Seul-Gi Kim

    (Sungkyunkwan University (SKKU))

  • Jeong-Hyeon Kim

    (Sungkyunkwan University (SKKU))

  • Philipp Ramming

    (University of Bayreuth
    University of Bayreuth)

  • Yu Zhong

    (University of Bayreuth
    University of Bayreuth)

  • Konstantin Schötz

    (University of Bayreuth)

  • Seok Joon Kwon

    (Sungkyunkwan University (SKKU)
    Korea Institute of Science and Technology (KIST))

  • Sven Huettner

    (University of Bayreuth)

  • Fabian Panzer

    (University of Bayreuth)

  • Nam-Gyu Park

    (Sungkyunkwan University (SKKU))

Abstract

Charge carriers’ density, their lifetime, mobility, and the existence of trap states are strongly affected by the microscopic morphologies of perovskite films, and have a direct influence on the photovoltaic performance. Here, we report on micro-wrinkled perovskite layers to enhance photocarrier transport performances. By utilizing temperature-dependent miscibility of dimethyl sulfoxide with diethyl ether, the geometry of the microscopic wrinkles of the perovskite films are controlled. Wrinkling is pronounced as temperature of diethyl ether (TDE) decreases due to the compressive stress relaxation of the thin rigid film-capped viscoelastic layer. Time-correlated single-photon counting reveals longer carrier lifetime at the hill sites than at the valley sites. The wrinkled morphology formed at TDE = 5 °C shows higher power conversion efficiency (PCE) and better stability than the flat one formed at TDE = 30 °C. Interfacial and additive engineering improve further PCE to 23.02%. This study provides important insight into correlation between lattice strain and carrier properties in perovskite photovoltaics.

Suggested Citation

  • Seul-Gi Kim & Jeong-Hyeon Kim & Philipp Ramming & Yu Zhong & Konstantin Schötz & Seok Joon Kwon & Sven Huettner & Fabian Panzer & Nam-Gyu Park, 2021. "How antisolvent miscibility affects perovskite film wrinkling and photovoltaic properties," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21803-2
    DOI: 10.1038/s41467-021-21803-2
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    Cited by:

    1. Ouedraogo, Nabonswende Aida Nadege & Odunmbaku, George Omololu & Ouyang, Yunfei & Xiong, Xiqiu & Guo, Bing & Chen, Shanshan & Lu, Shirong & Sun, Kuan, 2024. "Eco-friendly processing of perovskite solar cells in ambient air," Renewable and Sustainable Energy Reviews, Elsevier, vol. 192(C).

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