Picture of aircraft jet engine

Strathclyde research that powers aerospace engineering...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by Strathclyde researchers involved in aerospace engineering and from the Advanced Space Concepts Laboratory - but also other internationally significant research from within the Department of Mechanical & Aerospace Engineering. Discover why Strathclyde is powering international aerospace research...

Strathprints also exposes world leading research from the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

Thermal quenching mechanism of photoluminescence in 1.55 µm GaInNAsSb/Ga(N)As quantum-well structures

Sun, H.D. and Calvez, S. and Dawson, M.D. and Gupta, J.A. and Aers, G.C. and Sproule, G.I. (2006) Thermal quenching mechanism of photoluminescence in 1.55 µm GaInNAsSb/Ga(N)As quantum-well structures. Applied Physics Letters, 89 (10). ISSN 0003-6951

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

Abstract

The authors report the temperature dependent photoluminescence characteristics of a series of GaInNAsSb/Ga(N)As double quantum wells which all emit at 1.5-1.55 µm at room temperature and whose design is such that the quantum wells have nominally identical valence band profiles but show different confinement depth in the conduction band. The photoluminescence quenching at high temperature demonstrates a thermal activation energy independent of the conduction band offset and can be most plausibly attributed to the unipolar thermalization of holes from the quantum wells to the barriers. This effect will intrinsically limit the flexibility of heterostructure design using GaInNAs(Sb), as it would for any other material system with small valence band offset.