Picture of neon light reading 'Open'

Discover open research at Strathprints as part of International Open Access Week!

23-29 October 2017 is International Open Access Week. The Strathprints institutional repository is a digital archive of Open Access research outputs, all produced by University of Strathclyde researchers.

Explore recent world leading Open Access research content this Open Access Week from across Strathclyde's many research active faculties: Engineering, Science, Humanities, Arts & Social Sciences and Strathclyde Business School.

Explore all Strathclyde Open Access research outputs...

Quantum dot emission from site-controlled InGaN/GaN micropyramid arrays

Edwards, P.R. and Martin, R.W. and Watson, I.M. and Liu, C. and Taylor, R.A. and Rice, J.H. and Na, J.H. and Robinson, J.W. and Smith, J.D. (2004) Quantum dot emission from site-controlled InGaN/GaN micropyramid arrays. Applied Physics Letters, 85 (19). pp. 4281-4283. ISSN 0003-6951

[img]
Preview
PDF
Edwards2004APL85.pdf - Final Published Version

Download (428kB) | Preview

Abstract

InxGa1−xN quantum dots have been fabricated by the selective growth of GaN micropyramid arrays topped with InGaN/GaN quantum wells. The spatially, spectrally, and time-resolved emission properties of these structures were measured using cathodoluminescence hyperspectral imaging and low-temperature microphotoluminescence 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 decay lifetimes of approximately 0.5 ns, with linewidths down to 650 meV