Tunable chromaticity stability in solution-processed organic light emitting devices

被引：8
|
作者：
Huang, Ming-Hong [1 ]
Lin, Wei-Chieh [1 ]
Fan, Chia-Chan [1 ]
Wang, Yu-Shih [1 ]
Lin, Hao-Wu [1 ]
Liao, Jia-Ling [2 ]
Lin, Cheng-Huei [2 ]
Chi, Yun [2 ]
机构：
[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan
[2] Natl Tsing Hua Univ, Dept Chem, Hsinchu 30013, Taiwan
来源：
ORGANIC ELECTRONICS | 2015年 / 20卷
关键词：
Solution process; Organic light-emitting diodes; Chromaticity tunability; Chromaticity stability; Lighting; Color rendering index; HIGH-EFFICIENCY; SMALL MOLECULES; BIPOLAR HOST; LOW-VOLTAGE; DIODES; LAYER; COLOR; BLUE; FABRICATION; EMITTERS;
D O I：
10.1016/j.orgel.2015.01.019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Efficient solution-processed color-stable and color-tunable white organic light emitting diodes (OLEDs) have been realized by judicious selection of the host materials for the emission layers. The color-tunable OLED demonstrates the unique characteristic of modulating the electroluminescence by using the applied voltage of the device and displays color temperatures ranging from 1600 K to 4600 K around the daylight locus, with a peak external quantum efficiency of 13.6% and a peak current efficiency of 22.5 cd A(-1). On the other hand, the chromaticity-stable device shows a negligible color change, from 300 to 2000 nits. The manipulation of chromaticity is attributed to the energy transfer dynamics of the hosts and dopants under different electric fields. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：36 / 42
页数：7
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