Phosphorescent White Organic Light-Emitting Diodes by Electron Transporting Layer Engineering

被引：1
|
作者：
Lee, Seok Jae [1 ]
Koo, Ja Ryong [1 ]
Lee, Dong Hyung [1 ]
Lee, Ho Won [1 ]
Lee, Kum Hee [2 ]
Yoon, Seung Soo [2 ]
Kim, Young Kwan [1 ]
机构：
[1] Hongik Univ, Dept Informat Display, Seoul 121791, South Korea
[2] Sungkyunkwan Univ, Dept Chem, Suwon 440746, South Korea
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2014年 / 14卷 / 10期
基金：
新加坡国家研究基金会;
关键词：
White PHOLED; Dual Electron Transporting Layer; Stepwise Electron Transporting Layer; QUANTUM EFFICIENCY; CARRIER; DEVICES;
D O I：
10.1166/jnn.2014.9398
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The authors describe the fabrication of white organic light-emitting diodes (WOLEDs) with dual electron transporting layers (D-ETL) using 2,9-dimethyl-4,7-diphenyl-1,10-phenanhroline/4,7-diphenyl-1,10-phenanthroline (BPhen) and bis-(2-methyl-8-quinolinolate)-4-(phenylphenolato) aluminum/BPhen. Stepwise D-ETL easily transports electrons easily to the emitting layer and reduces the leakage of electrons. Therefore, WOLEDs with D-ETL show higher external quantum efficiency (EQE) when compared to a control WOLED with a single ETL device. The optimized WOLEDs showed a peak EQE of 13.0%, luminous efficiency of 27.4 cd/A, and Commission Internationale de L'Eclairage coordinates of (0.40, 0.39) at 1000 cd/m(2).
引用
收藏
页码：7835 / 7838
页数：4
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