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Origin of vertical orientation in two-dimensional metal halide perovskites and its effect on photovoltaic performance

Author

Listed:
  • Alexander Z. Chen

    (University of Virginia)

  • Michelle Shiu

    (University of Virginia)

  • Jennifer H. Ma

    (University of Virginia)

  • Matthew R. Alpert

    (University of Virginia)

  • Depei Zhang

    (University of Virginia)

  • Benjamin J. Foley

    (University of Virginia)

  • Detlef-M. Smilgies

    (Cornell University)

  • Seung-Hun Lee

    (University of Virginia)

  • Joshua J. Choi

    (University of Virginia)

Abstract

Thin films based on two-dimensional metal halide perovskites have achieved exceptional performance and stability in numerous optoelectronic device applications. Simple solution processing of the 2D perovskite provides opportunities for manufacturing devices at drastically lower cost compared to current commercial technologies. A key to high device performance is to align the 2D perovskite layers, during the solution processing, vertical to the electrodes to achieve efficient charge transport. However, it is yet to be understood how the counter-intuitive vertical orientations of 2D perovskite layers on substrates can be obtained. Here we report a formation mechanism of such vertically orientated 2D perovskite in which the nucleation and growth arise from the liquid–air interface. As a consequence, choice of substrates can be liberal from polymers to metal oxides depending on targeted application. We also demonstrate control over the degree of preferential orientation of the 2D perovskite layers and its drastic impact on device performance.

Suggested Citation

  • Alexander Z. Chen & Michelle Shiu & Jennifer H. Ma & Matthew R. Alpert & Depei Zhang & Benjamin J. Foley & Detlef-M. Smilgies & Seung-Hun Lee & Joshua J. Choi, 2018. "Origin of vertical orientation in two-dimensional metal halide perovskites and its effect on photovoltaic performance," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03757-0
    DOI: 10.1038/s41467-018-03757-0
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    Cited by:

    1. Yajie Yan & Yingguo Yang & Mingli Liang & Mohamed Abdellah & Tõnu Pullerits & Kaibo Zheng & Ziqi Liang, 2021. "Implementing an intermittent spin-coating strategy to enable bottom-up crystallization in layered halide perovskites," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
    2. 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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