Title :
Enhancement of light extraction of GaN-based LED with introducing microstructure array
Author :
Lin, Chao-Ying ; Lee, Tsung-Xian ; Ma, Shi-Xin ; Sun, Ching-Cherng
Author_Institution :
Inst. of Opt. Sci., Nat. Central Univ., Chung-li, Taiwan
Abstract :
Optical models for simulating light extraction efficiency of an GaN-based LED chip is presented. We propose to introduce a periodic sharpening structure on the interface between the sapphire and the n-GaN of a GaN-based LED to obtain as high as 73% in light extraction efficiency.
Keywords :
III-V semiconductors; gallium compounds; light emitting diodes; optical arrays; periodic structures; sapphire; GaN-Al2O3; GaN-based LED; light extraction; light extraction efficiency; microstructure array; optical model; periodic sharpening structure; sapphire; Absorption; Chaos; Light emitting diodes; Light scattering; Optical arrays; Optical scattering; Periodic structures; Rough surfaces; Sun; Surface roughness;
Conference_Titel :
Lasers and Electro-Optics, 2003. CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on
Print_ISBN :
0-7803-7766-4
DOI :
10.1109/CLEOPR.2003.1274505
