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White OLEDs: Management of Singlet and Triplet Excitons in a Single Emission Layer: A Simple Approach for a High-Efficiency Fluorescence/Phosphorescence Hybrid White Organic Light-Emitting Device (Adv. Mater. 25/2012)

Authors

  • Jun Ye,

    1. Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
    2. Graduate University of the Chinese Academy of Sciences, Beijing, 100039, PR China
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  • Cai-Jun Zheng,

    1. Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
    2. Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong SAR, PR China
    3. Department of Physics and Materials Sciences, City University of Hong Kong, Hong Kong SAR, PR China
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  • Xue-Mei Ou,

    1. Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
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  • Xiao-Hong Zhang,

    Corresponding author
    1. Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
    • Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
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  • Man-Keung Fung,

    1. Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong SAR, PR China
    2. Department of Physics and Materials Sciences, City University of Hong Kong, Hong Kong SAR, PR China
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  • Chun-Sing Lee

    Corresponding author
    1. Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong SAR, PR China
    2. Department of Physics and Materials Sciences, City University of Hong Kong, Hong Kong SAR, PR China
    • Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong SAR, PR China.
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Abstract

original image

A high-efficiency single-emission-layer (EML) hybrid white organic light-emitting device is fabricated based on an ideal sky blue fluorophor, DADBT, using a novel doping concentration regulation strategy. This strategy, outlined on page 3410 by X.-H. Zhang, C.-S. Lee, and co-workers, effectively separates and respectively utilizes the singlet and triplet excitons in the single-EML. The white device shows excellent electroluminescence performance with maximum total efficiencies of 26.6%, 53.5 cd A−1 and 67.2 lm W−1.

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