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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

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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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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.