Light-Emitting Diodes: Organic Light-Emitting Diodes with 30% External Quantum Efficiency Based on a Horizontally Oriented Emitter (Adv. Funct. Mater. 31/2013)

Authors

  • Sei-Yong Kim,

    1. Department of Materials Science and Engineering and Center for Organic Light Emitting Diode, Seoul National University, Seoul 151-742, South Korea
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  • Won-Ik Jeong,

    1. Department of Materials Science and Engineering and Center for Organic Light Emitting Diode, Seoul National University, Seoul 151-742, South Korea
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  • Christian Mayr,

    1. Institute of Physics, University of Augsburg, 86135 Augsburg, Germany
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  • Young-Seo Park,

    1. Department of Materials Science and Engineering and Center for Organic Light Emitting Diode, Seoul National University, Seoul 151-742, South Korea
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  • Kwon-Hyeon Kim,

    1. Department of Materials Science and Engineering and Center for Organic Light Emitting Diode, Seoul National University, Seoul 151-742, South Korea
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  • Jeong-Hwan Lee,

    1. Department of Materials Science and Engineering and Center for Organic Light Emitting Diode, Seoul National University, Seoul 151-742, South Korea
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  • Chang-Ki Moon,

    1. Department of Materials Science and Engineering and Center for Organic Light Emitting Diode, Seoul National University, Seoul 151-742, South Korea
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  • Wolfgang Brütting,

    1. Institute of Physics, University of Augsburg, 86135 Augsburg, Germany
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  • Jang-Joo Kim

    Corresponding author
    1. Department of Materials Science and Engineering and Center for Organic Light Emitting Diode, Seoul National University, Seoul 151-742, South Korea
    • Department of Materials Science and Engineering and Center for Organic Light Emitting Diode, Seoul National University, Seoul 151-742, South Korea.
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Abstract

original image

Green phosphorescent organic light-emitting diodes (OLEDs) based on a horizontally oriented emitter are analysed by J.-J. Kim and co-workers on page 3896. They demonstrate that theoretical analysis based on the orientation factor (the ratio of horizontal dipoles to total dipoles) and the quantum yield of the emitter predicts that the maximum EQE of OLEDs with this emitter is about 30%, matching experimental data, indicating that the electrical loss of the OLEDs is negligible and the device structure can be utilized as a platform to demonstrate the validity of optical modeling.

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