BCP对红色有机电致磷光器件效率的影响

Influence of BCP on Efficiency of Red Phosphorescent Electroluminescent Device

使用R-4B作为磷光掺杂剂,CBP为主体,制作以BCP调节载流子复合的红色磷光器件,器件结构ITO/MoO3(30)/NPB(40)/TCTA(10)/CBP:R-4B(6%)(15)/BCP(x)/CBP:R-4B(6%)(15)/BCP(10)/Alq3(40)/LiF/Al,其中x为BCP的厚度,对五种不同厚度的器件和一个对MoO3优化好且不加BCP的对比器件,来研究它们的发光性能和效率。实验表明:对于面积为1.18cm2的器件,BCP为4nm,MoO3在30nm时,它的性能达到了最佳,启亮电压为4V,最大效率为18.9cd.A-1,其对应的EL主峰位于612nm,色坐标为(0.643,0.353),得到了稳定高效的红色磷光OLED器件。

The present paper uses the R-4B as phosphor dopant, the main body was CBP, regulation carrier composite layer wasBCP, and the device structure was ITO/MoO3 （30）/NPB （40）/TCTA （10）/CBP ： R-4B（6%）（15）/BCP（x）/CBP ： R-4B（6M） （15）/BCP（10）/Alq3 （40）/LiF/A1. In the device, x was the thickness of the BCP with five different thickness of the device. At the same time, another contrast device was made, which had been optimized at MoO3 without regulated BCP layer. The result shows that the luminous area was 1.18 cm2 , BCP was 4, MoO3 was 30 nm, its performance was the best, light voltage was 4 V, maximum efficiency was 18. 9 cd ·A-1 , its corresponding EL main peak was at 612 nm, and color coordinates was （0. 643, 0. 353）, getting stable and high efficient red phosphor OLED devices.