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西安理工大学 电子工程系,陕西 西安,710048
纸质出版日期:2014-11-3,
收稿日期:2014-8-3,
修回日期:2014-9-25,
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安涛, 李朋, 李怀坤等. 基于量子阱结构的混合型白光有机发光器件[J]. 发光学报, 2014,35(11): 1342-1348
AN Tao, LI Peng, LI Huai-kun etc. Hybrid White Organic Light-emitting Devices Based on Quantum Well Structure[J]. Chinese Journal of Luminescence, 2014,35(11): 1342-1348
安涛, 李朋, 李怀坤等. 基于量子阱结构的混合型白光有机发光器件[J]. 发光学报, 2014,35(11): 1342-1348 DOI: 10.3788/fgxb20143511.1342.
AN Tao, LI Peng, LI Huai-kun etc. Hybrid White Organic Light-emitting Devices Based on Quantum Well Structure[J]. Chinese Journal of Luminescence, 2014,35(11): 1342-1348 DOI: 10.3788/fgxb20143511.1342.
以荧光材料BePP
2
结合量子阱作为蓝光发射层
磷光材料GIrl和R-4B掺入到混合双极性主体材料CBP:Bphen中分别作为绿、红发光层并且在红绿发光层中引入间隔层TPBI
组合得到发白光的混合型有机发光器件。其中量子阱是以BePP
2
作为势阱、TCTA为势垒。结果表明:当势垒层数为2时
器件的最大发光亮度和电流效率分别为21 682.5 cd/m
2
和23.73 cd/A;当电压从7 V增加到14 V时
色坐标从(0.345
0.350)变化到(0.340
0.342)。与无量子阱结构的参考器件相比
势垒层数为2的器件的最大功率效率为8.07 lm/W
色坐标变化相对最小为(0.005
0.008)
还有一个高的显色指数83。
Hybrid white organic light-emitting device based on fluorescent layer combining with phosphorescent doping layer was fabricated
in which fluorescent material BePP
2
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
BePP
2
and TCTA acted as the potential well layer and the potential barrier layer
respectively. The maximum luminance and current efficiency are 21 682.5 cd/m
2
and 23.73 cd/A
respectively. The Commission Internationale de IEclairage(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.
有机半导体磷光材料荧光材料量子阱白光有机发光器件
organic semiconductorphosphorescent materialfluorescent materialquantum wellwhite organic light-emitting devices
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