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

Shields, Philip A., Charlton, Martin, Lee, Tom, Zoorob, Majd and Allsopp, Duncan (2009) Enhanced light extraction by photonic quasi-crystals in GaN blue LEDs. IEEE Journal of Selected Topics in Quantum Electronics, 15, (4), 1269-1274. (doi:10.1109/JSTQE.2009.2016674).


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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.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1109/JSTQE.2009.2016674
ISSNs: 1077-260X (print)
1558-4542 (electronic)
Divisions : Faculty of Physical Sciences and Engineering > Electronics and Computer Science > NANO
ePrint ID: 270972
Accepted Date and Publication Date:
Date Deposited: 04 May 2010 09:56
Last Modified: 31 Mar 2016 14:17
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/270972

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