Improvement of light out-coupling efficiency in organic light-emitting diodes with variable nanopatterns

被引：0
作者：
Jeong Ho Kim
Joong-Yeon Cho
Jaehoon Park
Bong Kuk Lee
Kyu-Ha Baek
Heon Lee
Lee-Mi Do
机构：
[1] Korea University,Department of Material Science and Engineering
[2] Electronics and Telecommunications Research Institute,IT Convergence Technology Research Department
[3] Hallym University,Department of Electronic Engineering
来源：
Electronic Materials Letters | 2014年 / 10卷
关键词：
OLED; outcoupling; imprint; nanopattern;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We present a viable method to enhance the current efficiency of organic light-emitting diodes (OLEDs) by imprinting cylindrical nanopatterns (NPs) onto a glass substrate. Herein, OLEDs equipped with an optimum NP array having a diameter of 300 nm and a periodic distance of 500 nm show a 33.4% improvement in current efficiency compared with a device without NPs. The light extraction efficiency of OLEDs was enhanced using a nanopatterned glass substrate, without any electrical degradation owing to the formation of NPs on opposite sides of the organic layers. In addition, top-emitting OLEDs can be fabricated easily by patterning the encapsulation glass.
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页码：27 / 29
页数：2
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