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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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InGaN light-emitting diodes of micro-ring geometry

Choi, H.W. and Jeon, C.W. and Dawson, M.D. (2003) InGaN light-emitting diodes of micro-ring geometry. Physica Status Solidi C (7). pp. 2185-2188. ISSN 1862-6351

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Abstract

The fabrication and performance of an InGaN light-emitting diode (LED) array based on a micro-ring device geometry is reported. This design has been adopted in order to increase the surface area for light extraction and to minimize losses due to internal reflections and re-absorption. Electrical characteristics of these devices are similar to those of a conventional large-area LED, whilst the directed light extraction proves to be superior. In fact, these devices are found to be more efficient when operated at higher currents. This may be attributed to improved heat sinking due to the large surface area to volume ratio. The potential applications of these devices are also discussed.