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Wafer-scale single-crystal perovskite patterned thin films based on geometrically-confined lateral crystal growth

Author

Listed:
  • Lynn Lee

    (Hanyang University)

  • Jangmi Baek

    (Hanyang University)

  • Kyung Sun Park

    (Hanyang University)

  • Yong-EunKoo Lee

    (Hanyang University)

  • Nabeen K. Shrestha

    (Hanyang University
    Dongguk University)

  • Myung M. Sung

    (Hanyang University)

Abstract

We report a facile roll-printing method, geometrically confined lateral crystal growth, for the fabrication of large-scale, single-crystal CH3NH3PbI3 perovskite thin films. Geometrically confined lateral crystal growth is based on transfer of a perovskite ink solution via a patterned rolling mould to a heated substrate, where the solution crystallizes instantly with the immediate evaporation of the solvent. The striking feature of this method is that the instant crystallization of the feeding solution under geometrical confinement leads to the unidirectional lateral growth of single-crystal perovskites. Here, we fabricated single-crystal perovskites in the form of a patterned thin film (3 × 3 inch) with a high carrier mobility of 45.64 cm2 V−1 s−1. We also used these single-crystal perovskite thin films to construct solar cells with a lateral configuration. Their active-area power conversion efficiency shows a highest value of 4.83%, which exceeds the literature efficiency values of lateral perovskite solar cells.

Suggested Citation

  • Lynn Lee & Jangmi Baek & Kyung Sun Park & Yong-EunKoo Lee & Nabeen K. Shrestha & Myung M. Sung, 2017. "Wafer-scale single-crystal perovskite patterned thin films based on geometrically-confined lateral crystal growth," Nature Communications, Nature, vol. 8(1), pages 1-8, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15882
    DOI: 10.1038/ncomms15882
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    Cited by:

    1. Yurou Zhang & Miaoqiang Lyu & Tengfei Qiu & Ekyu Han & Il Ku Kim & Min-Cherl Jung & Yun Hau Ng & Jung-Ho Yun & Lianzhou Wang, 2020. "Halide Perovskite Single Crystals: Optoelectronic Applications and Strategical Approaches," Energies, MDPI, vol. 13(16), pages 1-27, August.

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