Synthesis of Organic–Inorganic Lead Halide Perovskite Nanoplatelets: Towards High-Performance Perovskite Solar Cells and Optoelectronic Devices

Authors

  • Son Tung Ha,

    1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
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  • Xinfeng Liu,

    1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
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  • Qing Zhang,

    1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
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  • David Giovanni,

    1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
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  • Tze Chien Sum,

    1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
    2. Singapore-Berkeley Research Initiative for Sustainable Energy, Singapore
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  • Qihua Xiong

    Corresponding author
    1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
    2. Singapore-Berkeley Research Initiative for Sustainable Energy, Singapore
    3. Division of Microelectronics, School of Electrical and Electronics Engineering, Nanyang Technological University, Singapore
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Abstract

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Highly crystalline organic–inorganic lead halide perovskite nanoplatelets are grown on muscovite mica utilizing van der Waals epitaxial growth followed by thermally intercalating methyl ammonium halides. The resulting CH3NH3PbI3 platelets show excellent optical properties with an electron diffusion length of more than 200 nm, which is approximately two times higher than that of the solution-processed film, suggesting considerable promise in photovoltaics and optoelectronics.

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