插入层TmP_yPb对白色有机电致发光二极管色纯度的影响

Improvement of Color Purity in White OLED Based on TmPyPb as Interlayer

摘要:

基于三原色白光器件ITO/NPB/TCTA/Ir(MDQ)2(acac)∶TCTA/TCTA/FIrpic∶TmPyPb/Ir(ppy)3∶TmPyPb/TmPyPb/LiF/Al,通过在其绿色与蓝色发光层之间插入不同厚度的TmPyPb,研究了该插入层的厚度对器件色纯度的影响。研究表明,插入层厚度的改变能够影响能量转移及调节激子的分布,当插入层厚度为4nm时,器件色坐标为(0.33,0.36),最大发光效率达11.58cd/A。

Abstract:

The effects of interlayer on color purity were studied by inserting different thickness of TmPyPb into the interface between blue and green emissions based on the structure of ITO/NPB/TCTA/Ir(MDQ)2(acac)∶TCTA/TCTA/FIrpic∶TmPyPb/Ir(ppy)3∶TmPyPb/TmPyPb/LiF/Al. The results show that the distribution of exciton and energy transfer can be adjusted and influenced by the thickness of interlayer. WOLED with peak efficiency of 11.58cd/A and CIE coordinates of (0.33,0.36) can be obtained when the thickness is 4nm.