Title :
The research on extraction efficiency of LED by lateral surface triangle roughening
Author :
Xiao Chen ; Peifeng Fang ; Bin Lin ; Baolin Liu ; Lihong Zhu
Author_Institution :
Tan Kah Kee Coll., Xiamen Univ., Zhangzhou, China
Abstract :
The external quantum efficiency of GaN-based LED is low because of the total reflection between air and semiconductor. Many research groups have being working on developing effective methods to improve the extraction efficiency of LED and the surface roughening is one of them which can efficiently improve the efficiency of LED. In this paper, we calculate the extraction efficiency by roughening the lateral surface with photon tracking method. The simulation results show that lateral triangle surface roughening is able to improve extraction efficiency of LED greatly.
Keywords :
III-V semiconductors; gallium compounds; light emitting diodes; surface treatment; wide band gap semiconductors; GaN; LED; external quantum efficiency; extraction efficiency; lateral surface roughening; lateral surface triangle roughening; photon tracking method; Absorption; Educational institutions; Light emitting diodes; Photonics; Reflection; Rough surfaces; Surface roughness; Extraction efficiency of LED; GaN-based LED; Lateral surface triangle roughen; Monte Carlo;
Conference_Titel :
Instrumentation & Measurement, Sensor Network and Automation (IMSNA), 2012 International Symposium on
Conference_Location :
Sanya
Print_ISBN :
978-1-4673-2465-6
DOI :
10.1109/MSNA.2012.6324613
