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Proceedings Paper

Enhancement of light extraction of GaN light-emitting diode by photonic crystal slab
Author(s): Yan Li; Ruisheng Zheng; Yuchun Feng; Songhao Liu; Hanben Niu
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Paper Abstract

The Light-emitting diodes based on III-nitride wide band gap semiconductors, which have a photonic crystal slab consisting of a graphite lattice of pillars on the cladding layer, is constructed. The vertical z direction optical output energy of the Light-emitting diodes is calculated by three-dimensional finite-difference time-domain method. The results show that the two-dimensional graphite-arranged pillars with a thick pillar in the middle can be utilized to enhance the light extraction. The tower-like pillars, which are thin on the top of the pillars and thick in the root of the pillars, benefit the light extraction when the angle of the tower-like pillars is proper. The optical output energy varies randomly with the change of PC columns in size and site in some extents randomly, but does not change very much.

Paper Details

Date Published: 18 January 2006
PDF: 9 pages
Proc. SPIE 6033, ICO20: Illumination, Radiation, and Color Technologies, 60330D (18 January 2006); doi: 10.1117/12.668068
Show Author Affiliations
Yan Li, Shenzhen Univ. (China)
South China Normal Univ. (China)
Ruisheng Zheng, Shenzhen Univ. (China)
Yuchun Feng, Shenzhen Univ. (China)
Songhao Liu, South China Normal Univ. (China)
Hanben Niu, Shenzhen Univ. (China)

Published in SPIE Proceedings Vol. 6033:
ICO20: Illumination, Radiation, and Color Technologies
Dazun Zhao; M. R. Luo; Hirohisa Yaguchi, Editor(s)

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