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8 February 2007 Light extraction analysis for GaN-based LEDs
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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.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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);

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