A Novel Liquid Packaging Structure of Deep-Ultraviolet Light-Emitting Diodes to Enhance the Light-Extraction Efficiency

被引：21

作者：

Kang, Chieh-Yu ^{[1
,2
]}

Lin, Chih-Hao ^{[1
,2
]}

Wu, Tingzhu ^{[3
]}

Lee, Po-Tsung ^{[1
,2
]}

Chen, Zhong ^{[3
]}

Kuo, Hao-Chung ^{[1
,2
]}

机构：

[1] Natl Chiao Tung Univ, Coll Elect & Comp Engn, Dept Photon, Hsinchu 30010, Taiwan

[2] Natl Chiao Tung Univ, Coll Elect & Comp Engn, Inst Electroopt Engn, Hsinchu 30010, Taiwan

[3] Xiamen Univ, Fujian Engn Res Ctr Solid State Lighting, Dept Elect Sci, Xiamen 361005, Peoples R China

来源：

CRYSTALS | 2019年 / 9卷 / 04期

关键词：

deep-ultraviolet light emitting diode; silicone oil; liquid packaging; SOLAR-CELLS; UV;

D O I：

10.3390/cryst9040203

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

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.

引用

页数：9

共 23 条

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