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Efficient White Organic Light-Emitting Devices Based on Phosphorescent Platinum(II)/Fluorescent Dual-Emitting Layers

Authors

  • B.-P. Yan,

    1. Department of Chemistry, The HKU-CAS Joint Laboratory on New Materials and Nanotechnology Research Laboratory, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region (P.R. China)
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  • C. C. C. Cheung,

    1. Department of Chemistry, The HKU-CAS Joint Laboratory on New Materials and Nanotechnology Research Laboratory, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region (P.R. China)
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  • S. C. F. Kui,

    1. Department of Chemistry, The HKU-CAS Joint Laboratory on New Materials and Nanotechnology Research Laboratory, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region (P.R. China)
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  • H.-F. Xiang,

    1. Department of Chemistry, The HKU-CAS Joint Laboratory on New Materials and Nanotechnology Research Laboratory, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region (P.R. China)
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  • V. A. L. Roy,

    1. Department of Chemistry, The HKU-CAS Joint Laboratory on New Materials and Nanotechnology Research Laboratory, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region (P.R. China)
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  • S.-J. Xu,

    1. Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region (P.R. China)
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  • C.-M. Che

    1. Department of Chemistry, The HKU-CAS Joint Laboratory on New Materials and Nanotechnology Research Laboratory, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region (P.R. China)
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  • We gratefully acknowledge support from the University Development Fund (Nanotechnology Research Institute, 00600009), and the Strategic Research Theme on “Organic Optoelectronics” and Faculty Development Fund of Science Faculty of The University of Hong Kong; The Research Grants Council of the HKSAR, China (HKU 7039/03P); Seed Funding Programme for Basic Research (200411159167 and 200611159062) and the Innovation and Technology Commission of the Hong Kong SAR Government (ITF GHP/062/05). We thank Mandy Liu and Dickey Ma for their help in substrate preparation. We thank Rory Watt for his help in preparing this manuscript.

Abstract

original image

Efficient white organic light-emitting devices with uncomplicated architectures are fabricated employing phosphorescent platinum(II) complexes containing extended π-conjugated cyclometalated ligands as a yellow-light source, and fluorescent material 9,10-bis-(β-naphthyl)-anthrene as a blue-light source. Peak external quantum (power) efficiencies of 11.8 % (18.4 lm W–1) are demonstrated (see figure).

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