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D-O-A based organic phosphors for both aggregation-induced electrophosphorescence and host-free sensitization

Author

Listed:
  • Lulin Xu

    (Yunnan University)

  • Yuhang Mo

    (Yunnan University)

  • Ning Su

    (Yunnan University)

  • Changshen Shi

    (Yunnan University)

  • Ning Sun

    (Yunnan University)

  • Yuewei Zhang

    (Tsinghua University)

  • Lian Duan

    (Tsinghua University)

  • Zheng-Hong Lu

    (Yunnan University
    University of Toronto)

  • Junqiao Ding

    (Yunnan University
    Southwest United Graduate School)

Abstract

Pure organic phosphors capable of room-temperature phosphorescence show a great potential in organic light-emitting diodes, while it is limited by the big challenge to realize efficient electroluminescence under electric excitation. Herein, we develop a class of organic phosphors based on acridine as the electron donor, triazine as the electron acceptor and oxygen as the bridge between them. Benefitting from the characteristic donor-oxygen-acceptor geometry, these compounds are found to behave an exciting aggregation-induced organic room-temperature electrophosphorescence, and achieve a record-high external quantum efficiency of 15.8% for non-doped devices. Furthermore, they can sensitize multi-resonant emitters in the absence of any additional wide bandgap host, leading to an effective narrowband emission with a peak external quantum efficiency of 26.4% and a small full-width at half maximum of 26 nm. The results clearly indicate that donor-oxygen-acceptor geometry is a promising strategy to design organic phosphors suitable for organic light-emitting diodes.

Suggested Citation

  • Lulin Xu & Yuhang Mo & Ning Su & Changshen Shi & Ning Sun & Yuewei Zhang & Lian Duan & Zheng-Hong Lu & Junqiao Ding, 2023. "D-O-A based organic phosphors for both aggregation-induced electrophosphorescence and host-free sensitization," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37414-y
    DOI: 10.1038/s41467-023-37414-y
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    References listed on IDEAS

    as
    1. Ryota Kabe & Chihaya Adachi, 2017. "Organic long persistent luminescence," Nature, Nature, vol. 550(7676), pages 384-387, October.
    2. Kenry & Chengjian Chen & Bin Liu, 2019. "Enhancing the performance of pure organic room-temperature phosphorescent luminophores," Nature Communications, Nature, vol. 10(1), pages 1-15, December.
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    Cited by:

    1. Huili Ma & Lishun Fu & Xiaokang Yao & Xueyan Jiang & Kaiqi Lv & Qian Ma & Huifang Shi & Zhongfu An & Wei Huang, 2024. "Boosting organic phosphorescence in adaptive host-guest materials by hyperconjugation," Nature Communications, Nature, vol. 15(1), pages 1-7, December.

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