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Enhanced areal efficiency from 370nm AlGaN micro-ring light emitting diodes

Choi, H.W. and Dawson, M.D. (2005) Enhanced areal efficiency from 370nm AlGaN micro-ring light emitting diodes. Physica Status Solidi C, 2 (7). pp. 2854-2857. ISSN 1862-6351

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Abstract

The electrical and optical characteristics of a 370 nm AlGaN light-emitting diode device based on a microring-array geometry are presented. By structuring the light emission area into an interconnected array of micro-scale rings, the directed light extraction efficiency is enhanced, and current spreading in the n-type cladding layers is improved. A reduction of differential series resistance is observed, and the device saturates at a higher current as the carriers are injected efficiently and uniformly across the junction areas.

Item type: Article
ID code: 5313
Keywords: light emission, optics, geometry, Optics. Light, Condensed Matter Physics
Subjects: Science > Physics > Optics. Light
Department: Faculty of Science > Institute of Photonics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 04 Feb 2008
    Last modified: 04 Sep 2014 16:23
    URI: http://strathprints.strath.ac.uk/id/eprint/5313

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