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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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Luminescence properties of isolated InGaN/GaN quantum dots

Martin, R.W. and Edwards, P.R. and Taylor, R.A. and Rice, J.H. and Na, J.H. and Robinson, J.W. and Smith, J.D. and Liu, C. and Watson, I.M. (2005) Luminescence properties of isolated InGaN/GaN quantum dots. Physica Status Solidi A - Applications and Materials Science, 202 (3). pp. 372-376.

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Abstract

InxGa1–xN quantum dots have been fabricated by the selective growth of GaN micro-pyramid arrays topped with InGaN/GaN quantum wells. The spatially- and spectrally-resolved luminescence properties of these structures were measured using low-temperature micro-photoluminescence spectroscopy. The presence of InGaN quantum dots was confirmed directly by the observation of sharp peaks in the emission spectrum at the pyramid apices. These luminescence peaks exhibit linewidths down to 650 μeV (limited by the spectrometer resolution). We describe the broadening of the luminescence peak from a single dot as a function of temperature and excitation power.