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Proceedings Paper

Light extraction analysis for GaN-based LEDs
Author(s): Tung-Xian Lee; Kuo-Fong Go; Te-Yuan Chung; Ching-Cherng Sun
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Paper 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.

Paper Details

Date Published: 8 February 2007
PDF: 8 pages
Proc. SPIE 6473, Gallium Nitride Materials and Devices II, 64731P (8 February 2007); doi: 10.1117/12.696868
Show Author Affiliations
Tung-Xian Lee, National Central Univ. (Taiwan)
Kuo-Fong Go, National Central Univ. (Taiwan)
Te-Yuan Chung, National Central Univ. (Taiwan)
Ching-Cherng Sun, National Central Univ. (Taiwan)

Published in SPIE Proceedings Vol. 6473:
Gallium Nitride Materials and Devices II
Hadis Morkoc; Cole W. Litton, Editor(s)

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