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Lattice-matched molecular-anchor design for high-performance perovskite quantum dot light-emitting diodes

Author

Listed:
  • Jiawei Chen

    (Tsinghua University
    Nanjing University of Science and Technology)

  • Xiangyu Liu

    (Tsinghua University)

  • Bo Cai

    (Nanjing University of Posts & Telecommunications)

  • Yuanzhuang Cheng

    (Tsinghua University)

  • Hao Wen

    (Tsinghua University)

  • Danlei Zhu

    (Tsinghua University)

  • Yaonan Xiong

    (Hunan University)

  • Linjie Dai

    (University of Cambridge)

  • Xinghua Yan

    (Tsinghua University)

  • Baixu Xiang

    (Tsinghua University)

  • Xiyu Luo

    (Tsinghua University)

  • Wenjing Feng

    (Tsinghua University)

  • Jiuyao Du

    (Tsinghua University)

  • Shuyue Dong

    (Tsinghua University)

  • Qingsong Shan

    (Nanjing University of Science and Technology)

  • Shulin Chen

    (Hunan University)

  • Haibo Zeng

    (Nanjing University of Science and Technology)

  • Qihua Xiong

    (Tsinghua University)

  • Lian Duan

    (Tsinghua University
    Tsinghua University)

  • Dongxin Ma

    (Tsinghua University
    Tsinghua University)

Abstract

Perovskite quantum dot light-emitting diodes have rapidly achieved high external quantum efficiencies of over 25%; however, hindered by limited operating stability originating from surface defects or ion migration in quantum dots. Here, we design a lattice-matched anchoring molecule, tris(4-methoxyphenyl)phosphine oxide (TMeOPPO-p), to anchor the multi-site defects and stabilise the lattice. The target quantum dots exhibit high exciton recombination features with near-unity photoluminescence quantum yields (97%), and the as-fabricated quantum dot light-emitting diodes present a maximum external quantum efficiency of up to 27% at 693 nm, a low efficiency roll-off (over 20% at a current density of 100 mA cm−2 for the typical device) and an operating half-life of over 23,000 h. Besides, the air-processed devices maintain a maximum external quantum efficiency of over 26% with good storage stability. We expect this work to exert a profound influence on rational and on-demand molecule design for perovskite QDs, indicating great promise in optoelectronic applications.

Suggested Citation

  • Jiawei Chen & Xiangyu Liu & Bo Cai & Yuanzhuang Cheng & Hao Wen & Danlei Zhu & Yaonan Xiong & Linjie Dai & Xinghua Yan & Baixu Xiang & Xiyu Luo & Wenjing Feng & Jiuyao Du & Shuyue Dong & Qingsong Shan, 2025. "Lattice-matched molecular-anchor design for high-performance perovskite quantum dot light-emitting diodes," Nature Communications, Nature, vol. 16(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-63684-9
    DOI: 10.1038/s41467-025-63684-9
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