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Smoothing the energy transfer pathway in quasi-2D perovskite films using methanesulfonate leads to highly efficient light-emitting devices

Author

Listed:
  • Lingmei Kong

    (Shanghai University)

  • Xiaoyu Zhang

    (Jilin University)

  • Yunguo Li

    (University of Science and Technology of China)

  • Haoran Wang

    (Shanghai University)

  • Yuanzhi Jiang

    (Nankai University)

  • Sheng Wang

    (Shanghai University)

  • Mengqing You

    (Shanghai University)

  • Chengxi Zhang

    (Shanghai University)

  • Ting Zhang

    (Shanghai University)

  • Stephen V. Kershaw

    (City University of Hong Kong, Kowloon)

  • Weitao Zheng

    (Jilin University)

  • Yingguo Yang

    (Shanghai Advanced Research Institute, Chinese Academy of Sciences)

  • Qianqian Lin

    (Wuhan University)

  • Mingjian Yuan

    (Nankai University)

  • Andrey L. Rogach

    (City University of Hong Kong, Kowloon)

  • Xuyong Yang

    (Shanghai University)

Abstract

Quasi-two-dimensional (quasi-2D) Ruddlesden–Popper (RP) perovskites such as BA2Csn–1PbnBr3n+1 (BA = butylammonium, n > 1) are promising emitters, but their electroluminescence performance is limited by a severe non-radiative recombination during the energy transfer process. Here, we make use of methanesulfonate (MeS) that can interact with the spacer BA cations via strong hydrogen bonding interaction to reconstruct the quasi-2D perovskite structure, which increases the energy acceptor-to-donor ratio and enhances the energy transfer in perovskite films, thus improving the light emission efficiency. MeS additives also lower the defect density in RP perovskites, which is due to the elimination of uncoordinated Pb2+ by the electron-rich Lewis base MeS and the weakened adsorbate blocking effect. As a result, green light-emitting diodes fabricated using these quasi-2D RP perovskite films reach current efficiency of 63 cd A−1 and 20.5% external quantum efficiency, which are the best reported performance for devices based on quasi-2D perovskites so far.

Suggested Citation

  • Lingmei Kong & Xiaoyu Zhang & Yunguo Li & Haoran Wang & Yuanzhi Jiang & Sheng Wang & Mengqing You & Chengxi Zhang & Ting Zhang & Stephen V. Kershaw & Weitao Zheng & Yingguo Yang & Qianqian Lin & Mingj, 2021. "Smoothing the energy transfer pathway in quasi-2D perovskite films using methanesulfonate leads to highly efficient light-emitting devices," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21522-8
    DOI: 10.1038/s41467-021-21522-8
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    Cited by:

    1. Boni David Jonathan Yapi & Mehdi Seraj & Huseyin Ozdeser, 2024. "The Necessity of the Digital Economy for Sustainable Economic Growth in OECD Countries," Journal of Economics and Behavioral Studies, AMH International, vol. 16(1), pages 127-139.

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