Novel benzimidazole derivatives as electron-transporting type host to achieve highly efficient sky-blue phosphorescent organic light-emitting diode (PHOLED) device

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

doi:10.1021/ol502602t

Novel benzimidazole derivatives as electron-transporting type host to achieve highly efficient sky-blue phosphorescent organic light-emitting diode (PHOLED) device

Org Lett. 2014 Oct 17;16(20):5398-401. doi: 10.1021/ol502602t. Epub 2014 Oct 9.

Authors

Jau-Jiun Huang¹, Man-Kit Leung, Tien-Lung Chiu, Ya-Ting Chuang, Pi-Tai Chou, Yu-Hsiang Hung

Affiliation

¹ Department of Chemistry and ‡Institute of Polymer Science and Engineering, National Taiwan University , 1 Roosevelt Road Section 4, Taipei 106, Taiwan, R.O.C.

PMID: 25296531
DOI: 10.1021/ol502602t

Abstract

The development of benzimidazole substituted biphenyls as electron-transporting hosts for bis[2-(4,6-difluorophenyl)pyridinato-C(2),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%.