High-efficiency deep blue host for organic light-emitting devices

Zhi Qiang Gao*, Bao Xiu Mi, Chin H. Chen, Kok Wai CHEAH, Yuen Kit CHENG, Wen Shih Wen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)

Abstract

High-efficiency deep blue organic light-emitting devices have been fabricated using asymmetrically substituted 9- (α -naphthyl)-10- (Β -naphthyl)-anthracene as blue host material and diphenyl-[4-(2- [1, 1′; 4′, 1″] terphenyl -4-yl-vinyl)-phenyl]amine as dopant emitter. With an optimized device structure and doping concentration, the deep blue electroluminescent (EL) device achieved an EL efficiency of 4.9 cdA and an external quantum efficiency of 4.4% at a current density of 20 mA cm2 at saturated blue Commission Internationale de l'Eclairage coordinates of (0.15, 0.13). The deep blue device also has a current efficiency which is invariable with driving conditions ranging from 10 to 100 mA cm2.

Original languageEnglish
Article number123506
JournalApplied Physics Letters
Volume90
Issue number12
DOIs
Publication statusPublished - 2007

Scopus Subject Areas

  • Physics and Astronomy (miscellaneous)

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