Micro Organic Light Emitting Diode Arrays by Patterned Growth on Structured Polypyrrole
Micro Organic Light Emitting Diode Arrays by Patterned Growth on Structured Polypyrrole
复制标题
DOI：
10.1002/adom.201902105
复制
发表时间：
2020-03
影响因子：
9
通讯作者：
Jianping Li;Yun Hu;Xianhu Liang;Jianmei Chen;Liubiao Zhong;L. Liao;Lin Jiang;H. Fuchs;Wenchong Wang;Yandong Wang;L. Chi
中科院分区：
文献类型：
--
作者：
Jianping Li;Yun Hu;Xianhu Liang;Jianmei Chen;Liubiao Zhong;L. Liao;Lin Jiang;H. Fuchs;Wenchong Wang;Yandong Wang;L. Chi
具有几微米分辨率的图案化有机发光二极管（OLED）在诸如微显示器、虚拟和增强现实设备的应用中是重要的。本文报道了一种以导电聚合物聚吡咯（PPy）为成核层的微有机发光器件的制备方法。光刻图案化的PPy膜用于空穴传输层的图案化生长以局部限制载流子注入。展示了高分辨率红色、绿色和蓝色微OLED阵列。Al/Alq 3/NPB/PPy/ITO叠层结构的绿色微OLED的最大电流效率为3.41 cd A-1，比铟锡氧化物玻璃上的器件提高了80%。
Patterning organic light emitting diodes (OLEDs) with several micrometers resolution is of importance in applications such as micro displays, virtual and augmented reality devices. Here a fabrication method of micro OLEDs is reported, using conducting polymer polypyrrole (PPy) as nucleation layer. The photolithographically patterned PPy films are used for patterned growth of hole transport layer to locally confine carrier injection. High‐resolution red, green, and blue micro OLED arrays are demonstrated. The green micro OLEDs with stacked structure of Al/Alq3/NPB/PPy/ITO exhibit a maximum current efficiency of 3.41 cd A−1, which is 80% in comparison to those devices on indium tin oxide glass.