Hybrid white organic light-emitting devices based on quantum well structure

被引：0

作者：

An, Tao ^{[1
]}

Li, Peng ^{[1
]}

Li, Huai-Kun ^{[1
]}

Ding, Zhi-Ming ^{[1
]}

Wang, Hai-Feng ^{[1
]}

机构：

[1] Xi'an University of Technology, Xi'an

来源：

Faguang Xuebao/Chinese Journal of Luminescence | 2014年 / 35卷 / 11期

关键词：

Fluorescent material; Organic semiconductor; Phosphorescent material; Quantum well; White organic light-emitting devices;

D O I：

10.3788/fgxb20143511.1342

中图分类号：

学科分类号：

摘要：

Hybrid white organic light-emitting device based on fluorescent layer combining with phosphorescent doping layer was fabricated, in which fluorescent material BePP2 acted as blue emitter layer, phosphorescent material GIrl and R-4B doped into CBP: Bphen bipolar type host acted as green and red emitter layer, respectively. The ultrathin spacer layer was constructed by inserting a 2.0 nm thin layer of TPBI between red and green emitting layer. In the quantum well structure, BePP2 and TCTA acted as the potential well layer and the potential barrier layer, respectively. The maximum luminance and current efficiency are 21682.5 cd/m2 and 23.73 cd/A, respectively. The Commission Internationale de I'Eclairage (CIE) coordinates of the device vary from (0.345, 0.350) at 7 V to (0.340, 0.342) at 14 V when the number of potential barrier layer is two. In comparison with the reference device without quantum well structure, the device with two barrier layers achieves a maximum power efficiency of 8.07 lm/W, a low CIE coordinates changing of ±(0.005, 0.008), and a high color rendering index of 83. ©, 2014, Chines Academy of Sciences. All right reserved.

引用

页码：1342 / 1348

页数：6

共 17 条

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