通过插入Au薄膜改善绿光OLED器件的发光色纯度

在一些有机电致发光器件中，Au常被用作阳极，研究者希望Au在导电的同时兼具半透明可出光的属性，这要求Au在能导电的同时厚度要尽量薄。因此制备两种金属共同组成电极成为了选择。将半透明Au/Al层插入阳极一侧，制备了结构为ITO/Al(16 nm)/Au(10 nm)/TPD(30 nm)/AlQ(30 nm)/LiF(0.5 nm)/Al的OLED器件，相对于器件ITO/TPD(30 nm)/AlQ(30 nm)/LiF(0.5 nm)/Al在长波方向出现了光谱窄化现象，通过分析和实验判断该现象是Au薄膜特有的对光的选择透过性造成，而并非微腔效应。阳极一侧加入了Au/Al的器件保持了广视角无角度依赖的优点，同时可以输出滤掉部分红光的纯度更高的发光，发光色纯度得到了改善。

Improved Color Purity of Green OLED Device Based on Au Thin Film

Au was used as anode in some kind of organic electroluminescent devices. Sometimes transparent Au electrodes are required, which means that the thickness of Au electrode should be as thin as possible. Therefore, two metals together forming an electrode become a choice. In the present paper, translucent Au/Al layer was inserted to anode side, and OLED device with the structure of ITO/Al (16 nm)/Au (10 nm)/TPD (30 nm)/AlQ (30 nm)/LiF(0.5 nm)/Al was prepared. There is a spectral narrowing phenomenon on the device ITO/TPD (30 nm)/AlQ (30 nm)/LiF (0.5 nm)/Al, and through analysis and experiment it was found that this phenomenon comes from selective permeability to light of Au thin film rather than the microcavity effect. The device maintains wide viewing angle, without the angular dependence. And the color purity of device with Au thin film is improved.