Research

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


Reference:

Shields, P. A., Charlton, M. D. B., Lee, T., Zoorob, M. E., Allsopp, D. W. E. and Wang, W. N., 2009. Enhanced light extraction by photonic quasi-crystals in GaN blue LEDs. IEEE Journal of Selected Topics in Quantum Electronics, 15 (4), pp. 1269-1274.

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    Official URL:

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

    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.

    Details

    Item Type Articles
    CreatorsShields, P. A., Charlton, M. D. B., Lee, T., Zoorob, M. E., Allsopp, D. W. E. and Wang, W. N.
    DOI10.1109/JSTQE.2009.2016674
    Uncontrolled Keywordsfinite difference time domain method, light emission, photonic crystals, light, electroluminescence, electron beams
    DepartmentsFaculty of Engineering & Design > Electronic & Electrical Engineering
    Research CentresCentre for Advanced Sensor Technologies (CAST)
    Publisher Statementshields-15-4-2009.pdf: Copyright © 2009 IEEE. Reprinted from IEEE Journal of Selected Topics in Quantum Electronics. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bath’s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
    RefereedYes
    StatusPublished
    ID Code16185

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