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

Volume

2

fYear

2012

Firstpage

433

Lastpage

435

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation & Measurement, Sensor Network and Automation (IMSNA), 2012 International Symposium on

Conference_Location

Sanya

Print_ISBN

978-1-4673-2465-6

Type

conf

DOI

10.1109/MSNA.2012.6324613

Filename

6324613