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Solution-Processed Highly Efficient Blue Phosphorescent Polymer Light-Emitting Diodes Enabled by a New Electron Transport Material

Authors

  • Taeshik Earmme,

    1. University of Washington, Department of Chemical Engineering and Department of Chemistry, Benson Hall, Box 351750, Seattle, WA 98195-1750 (U.S.A.)
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  • Eilaf Ahmed,

    1. University of Washington, Department of Chemical Engineering and Department of Chemistry, Benson Hall, Box 351750, Seattle, WA 98195-1750 (U.S.A.)
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  • Samson A. Jenekhe

    Corresponding author
    1. University of Washington, Department of Chemical Engineering and Department of Chemistry, Benson Hall, Box 351750, Seattle, WA 98195-1750 (U.S.A.)
    • University of Washington, Department of Chemical Engineering and Department of Chemistry, Benson Hall, Box 351750, Seattle, WA 98195-1750 (U.S.A.).
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Abstract

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High-performance blue phosphorescent light-emitting diodes are fabricated by a new sequential solution-processing method made possible by a new wide-energy-gap electron-transport material. The PhOLEDs show a luminous efficiency of 28.3 cd A−1 with an EQE of 15.5% at 2790 cd m−2. Even at a remarkably high brightness of 10 000 cd m−2, the luminous efficiency remained higher than 20 cd A−1.

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