標題: A Novel Liquid Packaging Structure of Deep-Ultraviolet Light-Emitting Diodes to Enhance the Light-Extraction Efficiency
作者: Kang, Chieh-Yu
Lin, Chih-Hao
Wu, Tingzhu
Lee, Po-Tsung
Chen, Zhong
Kuo, Hao-Chung
電機學院
光電工程學系
College of Electrical and Computer Engineering
Department of Photonics
關鍵字: deep-ultraviolet light emitting diode;silicone oil;liquid packaging
公開日期: 1-四月-2019
摘要: To realize high-efficiency, AlGaN-based, deep-ultraviolet light-emitting diodes (DUV-LEDs), enhancing their light-extraction efficiency and reducing thermal resistance is very crucial. We proposed a liquid packaging structure that could enhance optical power by 27.2% and 70.7% for flat type and lens type 281-nm DUV-LEDs, respectively. A significant improvement effect at different wavelengths, such as 268 nm and 310 nm, was also observed. Furthermore, using the liquid packaging structure, the thermal resistance was reduced by 30.3% compared to the conventional structure. Finally, the reliability of liquid packaging DUV-LEDs was tested. The light output maintenance of liquid packaging DUV-LEDs was compared to the conventional structure.
URI: http://dx.doi.org/10.3390/cryst9040203
http://hdl.handle.net/11536/151967
ISSN: 2073-4352
DOI: 10.3390/cryst9040203
期刊: CRYSTALS
Volume: 9
Issue: 4
起始頁: 0
結束頁: 0
顯示於類別:期刊論文