Correlation of charge trapping and charge transport properties of blue triplet emitters with device performances of blue phosphorescent organic light-emitting diodes

被引：5

作者：

Park, Hyun Jin ^{[1
]}

Kim, Oh Young ^{[1
]}

Lee, Jun Yeob ^{[1
]}

机构：

[1] Dankook Univ, Dept Polymer Sci & Engn, Yongin 448701, Gyeonggi Do, South Korea

来源：

SYNTHETIC METALS | 2013年 / 176卷

关键词：

Phosphorescent organic light emitting diodes; Blue phosphorescent dopant; Driving voltage; Electron trapping; ELECTROPHOSPHORESCENT DEVICES; HOST MATERIALS; DEEP-BLUE; EFFICIENT; GREEN;

D O I：

10.1016/j.synthmet.2013.05.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The relationship between driving voltage and charge trapping in blue phosphorescent organic light-emitting diodes was investigated using two blue phosphorescent emitters based on fluorine substituted phenylpyridine ligands. It was demonstrated that electron trapping by dopant reduces electron current density in the emitting layer, while hole trapping had little effect on the hole current density in the emitting layer. It was found that the electron trapping by phosphorescent dopant was the dominant factor for the driving voltage of blue phosphorescent organic light emitting diodes. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：47 / 50

页数：4

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