scholarly journals Characterization study of GaN-based epitaxial layer and light-emitting diode on nature-patterned sapphire substrate

2012 ◽  
Vol 27 (6) ◽  
pp. 971-977 ◽  
Author(s):  
H.Y. Lin ◽  
Y.J. Chen ◽  
C.L. Chang ◽  
X.F. Li ◽  
C.H. Kuo ◽  
...  
Keyword(s):  
Epitaxial Layer ◽  
Sapphire Substrate ◽  
Light Emitting Diode ◽  
Patterned Sapphire Substrate ◽  
Light Emitting ◽  
Characterization Study ◽  
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Abstract

Improved Light Extraction Efficiency of Light-Emitting Diode Grown on Nanoscale-Silicon-Dioxide-Patterned Sapphire Substrate

2020 ◽  
Vol 12 (5) ◽  
pp. 647-651 ◽  
Author(s):  
Young Hoon Sung ◽  
Jaemin Park ◽  
Eun-Seo Choi ◽  
Hee Chul Lee ◽  
Heon Lee
Keyword(s):  
Silicon Dioxide ◽  
Sapphire Substrate ◽  
Extraction Efficiency ◽  
Light Emitting Diode ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Patterned Sapphire Substrate ◽  
Light Emitting ◽  
Sapphire Wafer ◽  
Luminescence Efficiency

A conical-shaped Si dioxide nano-pattern was employed to sapphire substrate in order to improve the light extraction efficiency of light-emitting diodes. The conical-shaped Si dioxide nano-patterns were fabricated on a 2-inch sapphire wafer using direct imprinting of hydrogen silsesquioxane material. A blue-LED structure was grown on conical-shaped silicon-dioxide nano-patterned sapphire substrates. Photoluminescence and electroluminescence measurements were used to confirm the effectiveness of the nanoscale Si oxide patterned sapphire. An improvement in the luminescence efficiency was observed when nanoscale Si oxide patterned sapphire substrate was used. 1.5 times higher PL intensity and 1.6 times higher EL intensity were observed for GaN LED structure grown on nanoscale Si oxide patterned sapphire, compared to LED structure grown on conventional flat sapphire wafer.

Fabrication of High-Power InGaN-Based Light-Emitting Diode Chips on Pyramidally Patterned Sapphire Substrate

2010 ◽  
Vol 49 (2) ◽  
pp. 020201 ◽  
Author(s):  
Yi-Ju Chen ◽  
Cheng-Huang Kuo ◽  
Chun-Ju Tun ◽  
Shih-Chieh Hsu ◽  
Yuh-Jen Cheng ◽  
...  
Keyword(s):  
Sapphire Substrate ◽  
High Power ◽  
Light Emitting Diode ◽  
Patterned Sapphire Substrate ◽  
Light Emitting

Implementation of a High-Performance GaN-Based Light-Emitting Diode Grown on a Nanocomb-Shaped Patterned Sapphire Substrate

2014 ◽  
Vol 50 (12) ◽  
pp. 973-980 ◽  
Author(s):  
Jian-Kai Liou ◽  
Chun-Chia Chen ◽  
Po-Cheng Chou ◽  
Zong-Jie Tsai ◽  
Yu-Chih Chang ◽  
...  
Keyword(s):  
Sapphire Substrate ◽  
High Performance ◽  
Light Emitting Diode ◽  
Patterned Sapphire Substrate ◽  
Light Emitting

scholarly journals Growth and Fabrication of GaN/InGaN Violet Light Emitting Diode on Patterned Sapphire Substrate

2014 ◽  
Vol 02 (12) ◽  
pp. 1113-1117 ◽  
Author(s):  
Sonachand Adhikari ◽  
Saroj Kanta Patra ◽  
Ashok Lunia ◽  
Sandeep Kumar ◽  
Priyavart Parjapat ◽  
...  
Keyword(s):  
Sapphire Substrate ◽  
Light Emitting Diode ◽  
Patterned Sapphire Substrate ◽  
Light Emitting ◽  
Violet Light
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