Picture of wind turbine against blue sky

Open Access research with a real impact...

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

The Energy Systems Research Unit (ESRU) within Strathclyde's Department of Mechanical and Aerospace Engineering is producing Open Access research that can help society deploy and optimise renewable energy systems, such as wind turbine technology.

Explore wind turbine research in Strathprints

Explore all of Strathclyde's Open Access research content

Photoluminescence and phonon satellites of single InGaN/GaN quantum wells with varying GaN cap thickness

Tan, L.T. and Martin, R.W. and O'Donnell, K.P. and Watson, I.M. (2006) Photoluminescence and phonon satellites of single InGaN/GaN quantum wells with varying GaN cap thickness. Applied Physics Letters, 89 (10). ISSN 0003-6951

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

Variations in thickness of the GaN caps above single InGaN quantum wells have been studied using photoluminescence spectroscopy. Data are presented from two series of samples designed to promote energy transfer to luminescent species on the surface. Improvements in the optical properties as the GaN cap thickness increases from 2.5 to 15 nm are accompanied by clear changes in the intensity of the LO-phonon satellites. Analysis of the strength of successive phonon satellites and the associated Huang-Rhys factors indicates that the amount of localization of the excitons is increased for the thinner cap samples. Surface depletion fields are also considered.