Low voltage and very high efficiency deep-blue phosphorescent organic light-emitting devices

被引：50

作者：

Eom, Sang-Hyun ^{[1
]}

Zheng, Ying ^{[1
]}

Chopra, Neetu ^{[1
]}

Lee, Jaewon ^{[1
]}

So, Franky ^{[1
]}

Xue, Jiangeng ^{[1
]}

机构：

[1] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 13期

关键词：

D O I：

10.1063/1.2996274

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on very high efficiency deep-blue phosphorescent organic light-emitting devices (PHOLEDs) based on iridium (III) bis (4', 6'-difluorophenylpyridinato) tetrakis (1-pyrazolyl) borate (FIr6). Dual emissive layers consisting of an N, N'-dicarbazolyl-3,5-benzene layer doped with 4 wt % FIr6 and a p-bis(triphenylsilyly) benzene layer doped with 25 wt % FIr6 were employed to maximize exciton generation on FIr6 molecules. Combined with the p-i-n device structure, we achieved a low turn-on voltage of 3.2 V and very high power efficiencies of 25 +/- 2 lm/W at 100 cd/m(2) and 20 +/- 2 lm/W at 1000 cd/m(2) for such deep-blue PHOLEDs with peak emission at a wavelength of 458 nm. (C) 2008 American Institute of Physics.

引用

页数：3

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APPLIED PHYSICS LETTERS, 2008, 92 (22)

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