High efficiency blue phosphorescent organic light-emitting device

被引：177

作者：

Chopra, Neetu ^{[1
]}

Lee, Jaewon ^{[1
]}

Zheng, Ying ^{[1
]}

Eom, Sang-Hyun ^{[1
]}

Xue, Jiangeng ^{[1
]}

So, Franky ^{[1
]}

机构：

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

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 14期

关键词：

Hole mobility - Current density - Electron transport properties - Iridium compounds - Phosphorescence;

D O I：

10.1063/1.3000382

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have demonstrated a substantial enhancement in the efficiency of iridium (III) bis[(4,6-di-fluorophenyl)-pyridinate-N,C-2']picolinate based blue phosphorescent organic light-emitting devices (PHOLEDs). The efficiencies of PHOLEDs with conventional electron transport materials are low due to their low electron mobilities as well low triplet energies. High triplet energy electron transporting material with high electron mobility was used as a hole blocker to achieve efficient exciton confinement and good charge balance in the device thereby achieving a high current efficiency of 49 cd/A and an external quantum efficiency of 23%. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3000382]

引用

页数：3

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