Enhancement of LED Light-Extraction Efficiency by Anodic Oxidation

2019 ◽  
Vol 2 (5) ◽  
pp. 217-221
Author(s):  
Chien-Chun Wang ◽  
Wei-Lun Lu ◽  
Mau-Phon Houng ◽  
Te-Chi Yen ◽  
Yeong-Her Wang ◽  
...  
Keyword(s):  
Anodic Oxidation ◽  
Extraction Efficiency ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Led Light

Influence of Grating Shape on LED Light Extraction Efficiency

2018 ◽  
Vol 55 (8) ◽  
pp. 082302
Author(s):  
方晓敏 Fang Xiaomin ◽  
江孝伟 Jiang Xiaowei ◽  
赵建伟 Zhao Jianwei
Keyword(s):  
Extraction Efficiency ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Led Light

Enhancement of near-UV GaN LED light extraction efficiency by GaN/sapphire template patterning

2012 ◽  
Vol 27 (8) ◽  
pp. 082002 ◽  
Author(s):  
M Ali ◽  
O Svensk ◽  
L Riuttanen ◽  
M Kruse ◽  
S Suihkonen ◽  
...  
Keyword(s):  
Extraction Efficiency ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Led Light ◽  
Gan Led

Surface Microstructure Machining for LED Light Extraction Efficiency Enhancement

2013 ◽  
Vol 589-590 ◽  
pp. 537-542 ◽  
Author(s):  
Dong Yuan ◽  
Long Sheng Lu
Keyword(s):  
Experimental Study ◽  
Extraction Efficiency ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Surface Microstructure ◽  
Efficiency Enhancement ◽  
Micro Cutting ◽  
Led Light ◽  
External Efficiency ◽  
Surface Microstructures

The external efficiency of LED is limited by total internal reflection on the interfacial surface. Surface structure modification is an effective way to solve this problem. In this work, micromachining method was present to manufacture surface microstructures for the GaN based LED light extraction efficiency enhancement. The feasibility of micromachining was discussed theoretically and proved by experimental study in this work. Micro-cutting and micro-forming approach was found be suitable for GaN surface microstructure machining. An experimental study of micro-cutting was carried out. The result shows that no crack and failure occurred during micro-cutting with 1μm cutting depth. This result demonstrated that microstructure can be machined on GaN based LED surface to enhance the LED light extraction efficiency.

ZnO Nano-arrays on High Power Blue LED Chip for Enhanced Light Extraction Efficiency

2012 ◽  
Vol 27 (7) ◽  
pp. 716-720
Author(s):  
Bing XU ◽  
Jun-Liang ZHAO ◽  
Jian-Ming ZHANG ◽  
Xiao-Wei SUN ◽  
Fu-Wei ZHUGE ◽  
...  
Keyword(s):  
High Power ◽  
Extraction Efficiency ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Blue Led
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