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Novel Benzimidazole Derivatives as Electron-Transporting Type Host To Achieve Highly Efficient Sky-Blue Phosphorescent Organic Light-Emitting Diode (PHOLED) Device

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journal contribution
posted on 2014-10-17, 00:00 authored by Jau-Jiun Huang, Man-kit Leung, Tien-Lung Chiu, Ya-Ting Chuang, Pi-Tai Chou, Yu-Hsiang Hung
The development of benzimidazole substituted biphenyls as electron-transporting hosts for bis­[2-(4,6-difluoro­phenyl)­pyridinato-C2,N]­(picolinato)­iridium­(III) is reported. Under the optimized conditions, the organic light-emitting diode (OLED) achieves the maximum current efficiency of 57.2 cd/A, power efficiency of 50.4 lm/W, and external quantum efficiency 25.7%.

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