Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1530498 | Materials Science and Engineering: B | 2009 | 4 Pages |
Abstract
Moth-eye structures were produced on a p-GaN top cladding layer by UV imprint and inductively coupled plasma (ICP) etch processes in order to improve the light extraction efficiency of GaN-based green light-emitting diodes (LEDs). The height and shape of moth-eye structures were adjusted by controlling the thickness of Cr mask layer and ICP etching time. The transmittance of LED device stacks with moth-eye structure was increased up to 1.5–2.5 times, compared to identical LED sample without moth-eye structure and the intensity of photoluminescence from the InGaN multi-quantum well layer of LED sample with moth-eye structure was 5–7 times higher than that of the LED sample without the moth-eye structure.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Eun-Ju Hong, Kyeong-Jae Byeon, Hyoungwon Park, Jaeyeon Hwang, Heon Lee, Kyungwoo Choi, Gun Young Jung,