Optical modeling and light extraction of an LED with surface roughening and sharpening

Ching-Cherng Sun; Chao-Ying Lin

doi:10.1117/12.512296

26 January 2004 Optical modeling and light extraction of an LED with surface roughening and sharpening

Ching-Cherng Sun, Chao-Ying Lin

Proceedings Volume 5187, Third International Conference on Solid State Lighting; (2004) https://doi.org/10.1117/12.512296
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

We have presented our study on optical models for simulating the light distribution of an LED and for calculating light extraction efficiency of an LED chip. In the former, we have precisely predicted the light distribution of an LED by a lens. In the latter, we have proposed 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.

Citation Download Citation

Ching-Cherng Sun and Chao-Ying Lin "Optical modeling and light extraction of an LED with surface roughening and sharpening", Proc. SPIE 5187, Third International Conference on Solid State Lighting, (26 January 2004); https://doi.org/10.1117/12.512296

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