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

被引：60

作者：

Gao, Zhi Qiang ^{[1
]}

Mi, Bao Xiu

Chen, Chin H.

Cheah, Kow Wai

Cheng, Yuen Kit

Wen, Wen-Shih

机构：

[1] Hong Kong Baptist Univ, Ctr Adv Luminescence Mat, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[2] Hong Kong Baptist Univ, Ctr Adv Luminescence Mat, Dept Chem, Hong Kong, Hong Kong, Peoples R China

[3] eRay Optoelect Technol Co Ltd, Chungli 320, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 12期

关键词：

D O I：

10.1063/1.2715041

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

High-efficiency deep blue organic light-emitting devices have been fabricated using asymmetrically substituted 9-(alpha-naphthyl)-10-(beta-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 cd/A and an external quantum efficiency of 4.4% at a current density of 20 mA/cm(2) 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/cm(2). (c) 2007 American Institute of Physics.

引用

页数：3

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