Optical modeling and light extraction of an LED with surface roughening and sharpening

Ching Cherng Sun; Chao Ying Lin

Optical modeling and light extraction of an LED with surface roughening and sharpening

Research output: Contribution to journal › Conference article › peer-review

4 Scopus citations

Abstract

We have presented our study on optical models for simulating the light distribution of an LED and for calculating light extraction efficiency of an LED chip. In the former, we have precisely predicted the light distribution of an LED by a lens. In the latter, we has proposed to introduce a periodic sharpening structure on the interface between the sapphire and the n-GaN of a GaN-based LED to obtain as high as 73% in light extraction efficiency.

Original language	English
Pages (from-to)	100-106
Number of pages	7
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5187
State	Published - 2004
Event	Third International Conference on Solid State Lighting - San Diego, CA, United States Duration: 5 Aug 2003 → 7 Aug 2003

Keywords

GaN
Inverse pyramid
Light extraction efficiency
Optical model
Sharpening structure

Cite this

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title = "Optical modeling and light extraction of an LED with surface roughening and sharpening",

abstract = "We have presented our study on optical models for simulating the light distribution of an LED and for calculating light extraction efficiency of an LED chip. In the former, we have precisely predicted the light distribution of an LED by a lens. In the latter, we has proposed to introduce a periodic sharpening structure on the interface between the sapphire and the n-GaN of a GaN-based LED to obtain as high as 73% in light extraction efficiency.",

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T1 - Optical modeling and light extraction of an LED with surface roughening and sharpening

AU - Sun, Ching Cherng

AU - Lin, Chao Ying

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N2 - We have presented our study on optical models for simulating the light distribution of an LED and for calculating light extraction efficiency of an LED chip. In the former, we have precisely predicted the light distribution of an LED by a lens. In the latter, we has proposed to introduce a periodic sharpening structure on the interface between the sapphire and the n-GaN of a GaN-based LED to obtain as high as 73% in light extraction efficiency.

AB - We have presented our study on optical models for simulating the light distribution of an LED and for calculating light extraction efficiency of an LED chip. In the former, we have precisely predicted the light distribution of an LED by a lens. In the latter, we has proposed to introduce a periodic sharpening structure on the interface between the sapphire and the n-GaN of a GaN-based LED to obtain as high as 73% in light extraction efficiency.

KW - GaN

KW - Inverse pyramid

KW - Light extraction efficiency

KW - Optical model

KW - Sharpening structure

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JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Third International Conference on Solid State Lighting

Y2 - 5 August 2003 through 7 August 2003

ER -

Optical modeling and light extraction of an LED with surface roughening and sharpening

Abstract

Keywords

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