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Growth mechanism of strongly emitting CH3NH3PbBr3 perovskite nanocrystals with a tunable bandgap

Author

Listed:
  • He Huang

    (City University of Hong Kong)

  • Johannes Raith

    (City University of Hong Kong)

  • Stephen V. Kershaw

    (City University of Hong Kong)

  • Sergii Kalytchuk

    (Faculty of Science, Department of Physical Chemistry, Palacky University Olomouc)

  • Ondrej Tomanec

    (Faculty of Science, Department of Physical Chemistry, Palacky University Olomouc)

  • Lihong Jing

    (Institute of Chemistry, Chinese Academy of Sciences, Bei Yi Jie 2, Zhong Guan Cun)

  • Andrei S. Susha

    (City University of Hong Kong)

  • Radek Zboril

    (Faculty of Science, Department of Physical Chemistry, Palacky University Olomouc)

  • Andrey L. Rogach

    (City University of Hong Kong)

Abstract

Metal halide perovskite nanocrystals are promising materials for a diverse range of applications, such as light-emitting devices and photodetectors. We demonstrate the bandgap tunability of strongly emitting CH3NH3PbBr3 nanocrystals synthesized at both room and elevated (60 °C) temperature through the variation of the precursor and ligand concentrations. We discuss in detail the role of two ligands, oleylamine and oleic acid, in terms of the coordination of the lead precursors and the nanocrystal surface. The growth mechanism of nanocrystals is elucidated by combining the experimental results with the principles of nucleation/growth models. The proposed formation mechanism of perovskite nanocrystals will be helpful for further studies in this field and can be used as a guide to improve the synthetic methods in the future.

Suggested Citation

  • He Huang & Johannes Raith & Stephen V. Kershaw & Sergii Kalytchuk & Ondrej Tomanec & Lihong Jing & Andrei S. Susha & Radek Zboril & Andrey L. Rogach, 2017. "Growth mechanism of strongly emitting CH3NH3PbBr3 perovskite nanocrystals with a tunable bandgap," Nature Communications, Nature, vol. 8(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-00929-2
    DOI: 10.1038/s41467-017-00929-2
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    Cited by:

    1. Soonil Hong & Jinho Lee, 2022. "Recent Advances and Challenges toward Efficient Perovskite/Organic Integrated Solar Cells," Energies, MDPI, vol. 16(1), pages 1-19, December.

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