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Guijiang Zhou, Wai-Yeung Wong, Bing Yao, Zhiyuan Xie and Lixiang Wang Triphenylamine-Dendronized Pure Red Iridium Phosphors with Superior OLED Efficiency/Color Purity Trade-Offs Angewandte Chemie International Edition 46

Article first published online: 3 JAN 2007 | DOI: 10.1002/anie.200604094

Thumbnail image of graphical abstract

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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