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Perovskite-molecule composite thin films for efficient and stable light-emitting diodes

Author

Listed:
  • Heyong Wang

    (Linköping University)

  • Felix Utama Kosasih

    (University of Cambridge)

  • Hongling Yu

    (Linköping University)

  • Guanhaojie Zheng

    (Linköping University)

  • Jiangbin Zhang

    (University of Cambridge)

  • Galia Pozina

    (Linköping University)

  • Yang Liu

    (Zhejiang University)

  • Chunxiong Bao

    (Linköping University)

  • Zhangjun Hu

    (Linköping University)

  • Xianjie Liu

    (Linköping University)

  • Libor Kobera

    (Institute of Macromolecular Chemistry of the Czech Academy of Sciences)

  • Sabina Abbrent

    (Institute of Macromolecular Chemistry of the Czech Academy of Sciences)

  • Jiri Brus

    (Institute of Macromolecular Chemistry of the Czech Academy of Sciences)

  • Yizheng Jin

    (Zhejiang University)

  • Mats Fahlman

    (Linköping University)

  • Richard H. Friend

    (University of Cambridge)

  • Caterina Ducati

    (University of Cambridge)

  • Xiao-Ke Liu

    (Linköping University)

  • Feng Gao

    (Linköping University)

Abstract

Although perovskite light-emitting diodes (PeLEDs) have recently experienced significant progress, there are only scattered reports of PeLEDs with both high efficiency and long operational stability, calling for additional strategies to address this challenge. Here, we develop perovskite-molecule composite thin films for efficient and stable PeLEDs. The perovskite-molecule composite thin films consist of in-situ formed high-quality perovskite nanocrystals embedded in the electron-transport molecular matrix, which controls nucleation process of perovskites, leading to PeLEDs with a peak external quantum efficiency of 17.3% and half-lifetime of approximately 100 h. In addition, we find that the device degradation mechanism at high driving voltages is different from that at low driving voltages. This work provides an effective strategy and deep understanding for achieving efficient and stable PeLEDs from both material and device perspectives.

Suggested Citation

  • Heyong Wang & Felix Utama Kosasih & Hongling Yu & Guanhaojie Zheng & Jiangbin Zhang & Galia Pozina & Yang Liu & Chunxiong Bao & Zhangjun Hu & Xianjie Liu & Libor Kobera & Sabina Abbrent & Jiri Brus & , 2020. "Perovskite-molecule composite thin films for efficient and stable light-emitting diodes," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-14747-6
    DOI: 10.1038/s41467-020-14747-6
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    Cited by:

    1. Konstantinos Alexopoulos & Bryn Davies, 2022. "Asymptotic analysis of subwavelength halide perovskite resonators," Partial Differential Equations and Applications, Springer, vol. 3(4), pages 1-28, August.

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