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

Huang, Jau-Jiun; Leung, Man-kit; Chiu, Tien-Lung; Chuang, Ya-Ting; Chou, Pi-Tai; Hung, Yu-Hsiang

doi:10.1021/ol502602t.s001

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

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%.