Highly Efficient Organic Blue-and White-Light-Emitting Devices Having a Carrier- and Exciton-Confining Structure for Reduced Efficiency Roll-Off

Authors

  • Shi-Jian Su,

    Corresponding author
    1. Optoelectronic Industry and Technology Development Association Bunkyo-ku, Tokyo 112-0014 (Japan)
    • Optoelectronic Industry and Technology Development Association Bunkyo-ku, Tokyo 112-0014 (Japan).
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  • Eisuke Gonmori,

    1. Department of Polymer Science and Engineering, Faculty of Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510 (Japan)
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  • Hisahiro Sasabe,

    1. Optoelectronic Industry and Technology Development Association Bunkyo-ku, Tokyo 112-0014 (Japan)
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  • Junji Kido

    Corresponding author
    1. Department of Polymer Science and Engineering, Faculty of Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510 (Japan)
    • Department of Polymer Science and Engineering, Faculty of Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510 (Japan).
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  • This work was financially supported by the New Energy and Industrial Technology Development Organization (NEDO) through the “Advanced Organic Device Project”. The authors acknowledge Mitsubishi Chemical Group, Science and Technology Research Center, INC. for MCC-PC 1020.

Abstract

original image

Highly efficient blue and white OLEDs with reduced efficiency roll-off based on a carrier- and exciton-confining structure are developed. Record power efficiencies of 46 and 44 lm W−1 and an external quantum efficiency of 25% at the illumination-relevant luminance of 1000 cd m−2 are achieved for the blue and white OLEDs, respectively, without the use of any outcoupling techniques.

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