Micro Organic Light Emitting Diode Arrays by Patterned Growth on Structured Polypyrrole,Advanced Optical Materials

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Micro Organic Light Emitting Diode Arrays by Patterned Growth on Structured Polypyrrole
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2020-03-09 , DOI: 10.1002/adom.201902105
Jianping Li _{1,

2} , Yun Hu ₁ , Xianhu Liang ₁ , Jianmei Chen ₁ , Liubiao Zhong ₁ , Liangsheng Liao ₁ , Lin Jiang ₁ , Harald Fuchs ₂ , Wenchong Wang ₂ , Yandong Wang ₁ , Lifeng Chi ₁

Affiliation

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.

中文翻译：

通过结构化聚吡咯上的图案生长实现微有机发光二极管阵列

在诸如微型显示器，虚拟和增强现实设备之类的应用中，对具有几微米分辨率的有机发光二极管（OLED）进行构图至关重要。这里报道了使用导电聚合物聚吡咯（PPy）作为成核层的微型OLED的制造方法。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。演示了高分辨率的红色，绿色和蓝色微型OLED阵列。具有Al / Alq ₃ / NPB / PPy / ITO堆叠结构的绿色微型OLED的最大电流效率为3.41 cd A ^-1，与铟锡氧化物玻璃上的那些器件相比为80％。

更新日期：2020-03-09

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