Lithography Compatible, Flexible Micro-Organic Light-Emitting Diodes by Template-Directed Growth
Lithography Compatible, Flexible Micro-Organic Light-Emitting Diodes by Template-Directed Growth
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DOI：
10.1002/smtd.201800508
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发表时间：
2019-03
期刊：
影响因子：
12.4
通讯作者：
Juan Zhu;Jianping Li;Qigang Zhong;Hong Wang;Lizhen Huang;Florian Fontein;Laigui Hu;Ran Liu;H. Fuchs;Wenchong Wang;Yandong Wang;L. Chi
中科院分区：
文献类型：
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作者：
Juan Zhu;Jianping Li;Qigang Zhong;Hong Wang;Lizhen Huang;Florian Fontein;Laigui Hu;Ran Liu;H. Fuchs;Wenchong Wang;Yandong Wang;L. Chi
在这项工作中，高分辨率的灵活的微有机发光二极管（micro-OLED）的模板定向生长。通过平行图案化技术（纳米转移印刷和光刻）制备模板以在柔性衬底上创建预图案。预制图案充当成核位点并且在沉积时诱导有机半导体分子的区域选择性生长。通过优化衬底温度和生长速率等生长参数，可以实现各种发光材料的均匀图案，其特征尺寸低至数百纳米，包括柔性衬底上的橙子、蓝色和绿色发光。基于图案化的有机半导体进一步展示了柔性微OLED。结合平行图案化技术，本工作为大面积柔性有机电子器件提供了一种高产率和高分辨率的图案化方法。
In this work, high‐resolution flexible micro‐organic light‐emitting diodes (micro‐OLEDs) are presented by template‐directed growth. The templates are prepared by parallel patterning techniques (nanotransfer printing and photolithography) to create prepatterns on flexible substrates. The prepatterns act as nucleation sites and induce area‐selective growth of organic semiconductor molecules upon deposition. By optimization of growth parameters such as substrate temperature and growth rate, uniform patterns of diverse light‐emitting materials can be realized with feature sizes down to hundreds of nanometers, including orange, blue, and green emissions on the flexible substrates. Flexible micro‐OLEDs are further demonstrated based on the patterned organic semiconductors. By combination of parallel patterning techniques, this work provides a high yield and resolution patterning way for flexible organic electronics over large areas.