Organic Leds: Exciplex-Forming Co-host for Organic Light-Emitting Diodes with Ultimate Efficiency (Adv. Funct. Mater. 39/2013)

Authors

  • Young-Seo Park,

    1. Department of Materials Science and Engineering and the Center for Organic Light Emitting Diode, Seoul National University, Seoul, 151-744, South Korea
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  • Sunghun Lee,

    1. WCU Hybrid Materials Program, Department of Materials Science and Engineering and the Center for Organic Light Emitting Diode, Seoul National University, Seoul, 151-744, South Korea
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  • Kwon-Hyeon Kim,

    1. WCU Hybrid Materials Program, Department of Materials Science and Engineering and the Center for Organic Light Emitting Diode, Seoul National University, Seoul, 151-744, South Korea
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  • Sei-Yong Kim,

    1. Department of Materials Science and Engineering and the Center for Organic Light Emitting Diode, Seoul National University, Seoul, 151-744, South Korea
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  • Jeong-Hwan Lee,

    1. WCU Hybrid Materials Program, Department of Materials Science and Engineering and the Center for Organic Light Emitting Diode, Seoul National University, Seoul, 151-744, South Korea
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  • Jang-Joo Kim

    Corresponding author
    1. Department of Materials Science and Engineering and the Center for Organic Light Emitting Diode, Seoul National University, Seoul, 151-744, South Korea
    2. WCU Hybrid Materials Program, Department of Materials Science and Engineering and the Center for Organic Light Emitting Diode, Seoul National University, Seoul, 151-744, South Korea
    • Department of Materials Science and Engineering and the Center for Organic Light Emitting Diode, Seoul National University, Seoul, 151-744, South Korea.

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Abstract

original image

On page 4914, J.-J. Kim and co-workers use an exciplex-forming co-host to create phosphorescent organic light-emitting diodes with ultimate efficiencies reported in terms of the external quantum efficiency (EQE), driving voltage, and efficiency rolloff. The image expresses the formation of an exciplex by the recombination of an electron and a hole, followed by energy transfer from the exciplex-forming co-host to the dopant, and the luminescence of the green light from the dopant.

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