Enhanced light extraction by photonic quasi-crystals in GaN blue LEDs

Philip A. Shields; Martin D. B. Charlton; Tom Lee; Majd E. Zoorob; Duncan W. E. Allsopp; Wang Nang Wang

doi:10.1109/JSTQE.2009.2016674

Enhanced light extraction by photonic quasi-crystals in GaN blue LEDs

Philip A. Shields, Martin D. B. Charlton, Tom Lee, Majd E. Zoorob, Duncan W. E. Allsopp, Wang Nang Wang

Department of Electronic & Electrical Engineering

Research output: Contribution to journal › Article › peer-review

25 Citations (SciVal)

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Abstract

The far-field profile of photonic quasi-crystal patterned and unpatterned LEDs, fabricated from commercial epitaxial substrates by electron beam lithography, has been measured prior to lapping and dicing. Emission enhancements reach a maximum of 62%, and are strongly dependent on the filling factor. Qualitative agreement is achieved between 2-D finite-difference time-domain calculations and the experimental data.

Original language	English
Pages (from-to)	1269-1274
Number of pages	6
Journal	IEEE Journal of Selected Topics in Quantum Electronics
Volume	15
Issue number	4
Early online date	18 May 2009
DOIs	https://doi.org/10.1109/JSTQE.2009.2016674
Publication status	Published - Jul 2009

Keywords

Finite difference time domain method
Light emission
Photonic crystals
Light
Electroluminescence
Electron beams

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10.1109/JSTQE.2009.2016674

shields-15-4-2009.pdf
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Cite this

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title = "Enhanced light extraction by photonic quasi-crystals in GaN blue LEDs",

abstract = "The far-field profile of photonic quasi-crystal patterned and unpatterned LEDs, fabricated from commercial epitaxial substrates by electron beam lithography, has been measured prior to lapping and dicing. Emission enhancements reach a maximum of 62\%, and are strongly dependent on the filling factor. Qualitative agreement is achieved between 2-D finite-difference time-domain calculations and the experimental data.",

keywords = "Finite difference time domain method, Light emission, Photonic crystals, Light, Electroluminescence, Electron beams",

author = "Shields, \{Philip A.\} and Charlton, \{Martin D. B.\} and Tom Lee and Zoorob, \{Majd E.\} and Allsopp, \{Duncan W. E.\} and Wang, \{Wang Nang\}",

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AU - Shields, Philip A.

AU - Charlton, Martin D. B.

AU - Lee, Tom

AU - Zoorob, Majd E.

AU - Allsopp, Duncan W. E.

AU - Wang, Wang Nang

PY - 2009/7

Y1 - 2009/7

N2 - The far-field profile of photonic quasi-crystal patterned and unpatterned LEDs, fabricated from commercial epitaxial substrates by electron beam lithography, has been measured prior to lapping and dicing. Emission enhancements reach a maximum of 62%, and are strongly dependent on the filling factor. Qualitative agreement is achieved between 2-D finite-difference time-domain calculations and the experimental data.

AB - The far-field profile of photonic quasi-crystal patterned and unpatterned LEDs, fabricated from commercial epitaxial substrates by electron beam lithography, has been measured prior to lapping and dicing. Emission enhancements reach a maximum of 62%, and are strongly dependent on the filling factor. Qualitative agreement is achieved between 2-D finite-difference time-domain calculations and the experimental data.

KW - Finite difference time domain method

KW - Light emission

KW - Photonic crystals

KW - Light

KW - Electroluminescence

KW - Electron beams

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UR - http://dx.doi.org/10.1109/JSTQE.2009.2016674

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DO - 10.1109/JSTQE.2009.2016674

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JO - IEEE Journal of Selected Topics in Quantum Electronics

JF - IEEE Journal of Selected Topics in Quantum Electronics

IS - 4

ER -

Enhanced light extraction by photonic quasi-crystals in GaN blue LEDs

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David Bullett Nanofabrication Facility

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Enhanced light extraction by photonic quasi-crystals in GaN blue LEDs

Abstract

Keywords

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David Bullett Nanofabrication Facility

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