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Triphenylamine-Dendronized Pure Red Iridium Phosphors with Superior OLED Efficiency/Color Purity Trade-Offs

Authors

  • Guijiang Zhou Dr.,

    1. Department of Chemistry, Hong Kong Baptist University and Centre for Advanced Luminescence Materials, Waterloo Road, Kowloon Tong, Hong Kong, P.R. China, Fax: (+852) 3411-7348
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  • Wai-Yeung Wong Dr.,

    1. Department of Chemistry, Hong Kong Baptist University and Centre for Advanced Luminescence Materials, Waterloo Road, Kowloon Tong, Hong Kong, P.R. China, Fax: (+852) 3411-7348
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  • Bing Yao,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China, Fax: (+86) 431-5684937
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  • Zhiyuan Xie Prof.,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China, Fax: (+86) 431-5684937
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  • Lixiang Wang Prof.

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China, Fax: (+86) 431-5684937
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  • This work was supported by a CERG Grant from the Hong Kong Research Grants Council (HKBU 202106P) and a Faculty Research Grant from the Hong Kong Baptist University (FRG/04-05/II-59). OLED: organic light-emitting diode.

Abstract

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As good as red: Highly efficient pure red OLEDs based on iridium electrophosphors functionalized with hole-transporting triphenylamine dendrons are prepared (see picture). These bifunctional dendrimers give a peak efficiency of 11.7 % with an excellent color quality and offer an attractive avenue for the development of metal phosphors with the optimized efficiency/color purity trade-offs required for pure red-emitting devices. OLED=organic light-emitting diode.

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