Evaluation of the temperature-dependent internal quantum efficiency and the light-extraction efficiency in a GaN-based blue light-emitting diode by using a rate equation model

2016 ◽  
Vol 69 (8) ◽  
pp. 1286-1289 ◽  
Author(s):  
Young-Hwan Choi ◽  
Guen-Hwan Ryu ◽  
Han-Youl Ryu
Keyword(s):  
Rate Equation ◽  
Extraction Efficiency ◽  
Light Emitting Diode ◽  
Internal Quantum Efficiency ◽  
Equation Model ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Temperature Dependent ◽  
Light Emitting ◽  
Rate Equation Model

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.

Integrating Surface Textures on ZnO Substrate for High Light Extraction Efficiency Light-Emitting Diode

2014 ◽  
Vol 118 (27) ◽  
pp. 14894-14898 ◽  
Author(s):  
Qinghong Zheng ◽  
Dan Zhang ◽  
Jin Huang ◽  
Yonghao Wang ◽  
Feng Huang
Keyword(s):  
Extraction Efficiency ◽  
Light Emitting Diode ◽  
High Light ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Light Emitting ◽  
Surface Textures
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