HAT-CN作为空穴注入层的高效白色荧光有机电致发光二极管(英文)

High Efficiency White Fluorescent Organic Light-Emitting Diodes with HAT-CN Hole Injection Layer

制作了HAT-CN作为空穴注入层的蓝、黄二基色分离的堆叠式高效有机发光二极管,器件结构为:ITO/2-TNATA或HAT-CN(x nm)/NPB(25nm)/ADN(30nm)∶TBPE(2%)∶DCJTB(1%)/Alq3(20nm)/LiF(1nm)/Al(100nm)。实验结果表明,HAT-CN对载流子的注入和色纯度的影响很明显。相比于传统器件将CuPc和2-TNATA作为空穴注入层,HAT-CN作为空穴注入层得到了更高的效率和色纯度,CIE色坐标x=0.330 9,y=0.347 2,电流效率达到6.4cd/A。

This paper investigated a high efficiency stacked white fluorescent organic light emitting diodes consisting of separate blue and yellow elements with a 1, 4, 5, 8, 9, 11-hexaazatriphenylene-hexacar bonitril （HAT-CN） hole injection layer. The configurations of the devices are ITO/2-TNATA or HAT-CN（χ nm）/NPB （25 nm）/ADN （30 nm） ：TBPE （2%/60） ：DCJTB（1%）/Alq3 （20 nm）/LiF （1 nm）/A1 （100 nm）. According to the experimental result, the effect of HAT-CN film on carrier injection and color purity were significant. This work obtained a higher efficiency and color purity for the WOLED with HAT-CN layer, as compared to the conventional devices with copper phthalocyanine （CuPc） or 2-TNATA materials as a hole injection layer. It shows pure-white light emitting with 1931 CIE chromaticity coordinates .χ=O. 330 9, v=O. 347 2, and a current efficiency of6.4cd/A