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Proceedings Paper

Light extraction analysis of AlGaInP based LED with surface texture
Author(s): Yuan Qin; Xia Guo; Wen Jiang Jiang; Rong Fang; Guang Di Shen
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Paper Abstract

A Monte Carlo ray tracing method is applied to analyze the light extraction characteristics of AlGaInP based LED with various shapes of surface texture. Regular, periodic arranged structures were fabricated on p-side-up AlGaInP LEDs through dry etching. The dimension of the structures was optimized by Monte Carlo ray tracing simulation. Compared to the conventional LED, it significantly improved the performance of the chip, the light extraction efficiency was increased more than 11.5%. the enhancement is attributed to the appearance of an additional escape cone for light extraction enabled by surface texture. And it is also easy to extend the Monte Carlo ray tracing method to develop LED lamps, consisting a reflector dish and an epoxy lens.

Paper Details

Date Published: 26 November 2009
PDF: 7 pages
Proc. SPIE 7635, Display, Solid-State Lighting, Photovoltaics, and Optoelectronics in Energy, 763505 (26 November 2009); doi: 10.1117/12.849978
Show Author Affiliations
Yuan Qin, Beijing Univ. of Technology (China)
Xia Guo, Beijing Univ. of Technology (China)
Wen Jiang Jiang, Beijing Univ. of Technology (China)
Rong Fang, Beijing Univ. of Technology (China)
Guang Di Shen, Beijing Univ. of Technology (China)


Published in SPIE Proceedings Vol. 7635:
Display, Solid-State Lighting, Photovoltaics, and Optoelectronics in Energy

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