Light extraction analysis for GaN-based LEDs

Tung-Xian Lee; Kuo-Fong Go; Te-Yuan Chung; Ching-Cherng Sun

doi:10.1117/12.696868

8 February 2007 Light extraction analysis for GaN-based LEDs

Tung-Xian Lee, Kuo-Fong Go, Te-Yuan Chung, Ching-Cherng Sun

Proceedings Volume 6473, Gallium Nitride Materials and Devices II; 64731P (2007) https://doi.org/10.1117/12.696868
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

Abstract

Optical analysis of the light extraction based on Monte-Carlo ray tracing in high-efficiency GaN-based LEDs with use of textured structure is presented. The simulation indicates that the introduction of micro pyramid array with slanted surfaces can effectively improve the light extraction efficiency. In addition, the light extraction of three types of LED with or without an epoxy lens is analyzed, where the patterned substrate with pyramid structure arrays is shown most effective way to increase light extraction efficiency in an encapsulated LED with an epoxy lens.

Citation Download Citation

Tung-Xian Lee, Kuo-Fong Go, Te-Yuan Chung, and Ching-Cherng Sun "Light extraction analysis for GaN-based LEDs", Proc. SPIE 6473, Gallium Nitride Materials and Devices II, 64731P (8 February 2007); https://doi.org/10.1117/12.696868

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