Picture of two heads

Open Access research that challenges the mind...

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.

Discover more...

High extraction efficiency InGaN micro-ring light emitting diodes

Choi, H.W. and Dawson, M.D. and Edwards, P.R. and Martin, R.W. (2004) High extraction efficiency InGaN micro-ring light emitting diodes. Applied Physics Letters, 83 (22). pp. 4483-4485. ISSN 0003-6951

[img]
Preview
PDF
Choi2003APL83.pdf - Final Published Version

Download (169kB) | Preview

Abstract

Light-emitting diodes (LEDs) based on an interconnected array of GaN/InGaN micro-ring elements have been demonstrated. The devices have electrical characteristics similar to those of conventional broad-area devices. However, due to the large surface areas provided by the sidewalls, the extraction efficiency is greatly enhanced. Intense light emission at the periphery of the micro-rings is observed upon excitation by an electron beam, suggesting scattering of the photons which are extracted through the sidewalls. The devices provide a doubling in total light output compared to a broad-area reference LED of equal light-generation area.