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Thermally activated delayed fluorescence with 7% external quantum efficiency from a light-emitting electrochemical cell

Author

Listed:
  • Petter Lundberg

    (Umeå University)

  • Youichi Tsuchiya

    (Kyushu University
    Kyushu University)

  • E. Mattias Lindh

    (Umeå University)

  • Shi Tang

    (Umeå University
    LunaLEC AB, Linnaeus väg 24)

  • Chihaya Adachi

    (Kyushu University
    Kyushu University
    Kyushu University
    Kyushu University)

  • Ludvig Edman

    (Umeå University
    LunaLEC AB, Linnaeus väg 24)

Abstract

We report on light-emitting electrochemical cells, comprising a solution-processed single-layer active material and air-stabile electrodes, that exhibit efficient and bright thermally activated delayed fluorescence. Our optimized devices delivers a luminance of 120 cd m−2 at an external quantum efficiency of 7.0%. As such, it outperforms the combined luminance/efficiency state-of-the art for thermally activated delayed fluorescence light-emitting electrochemical cells by one order of magnitude. For this end, we employed a polymeric blend host for balanced electrochemical doping and electronic transport as well as uniform film formation, an optimized concentration (

Suggested Citation

  • Petter Lundberg & Youichi Tsuchiya & E. Mattias Lindh & Shi Tang & Chihaya Adachi & Ludvig Edman, 2019. "Thermally activated delayed fluorescence with 7% external quantum efficiency from a light-emitting electrochemical cell," Nature Communications, Nature, vol. 10(1), pages 1-11, December.
  • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-13289-w
    DOI: 10.1038/s41467-019-13289-w
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    Cited by:

    1. Sophie Griggs & Adam Marks & Dilara Meli & Gonzague Rebetez & Olivier Bardagot & Bryan D. Paulsen & Hu Chen & Karrie Weaver & Mohamad I. Nugraha & Emily A. Schafer & Joshua Tropp & Catherine M. Aitchi, 2022. "The effect of residual palladium on the performance of organic electrochemical transistors," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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