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

Site multiplicity of rare earth ions in III-nitrides

O'Donnell, K.P. and Katchkanov, V. and Wang, K. and Martin, R.W. and Hourahine, B. and Edwards, P.R. and Nogales, E. and Mosselmans, J.F.W. and De-Vries, B. (2004) Site multiplicity of rare earth ions in III-nitrides. MRS Online Proceedings Library, 831. pp. 527-535. ISSN 0272-9172

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

Abstract

This presentation reviews recent lattice location studies of RE ions in GaN by electron emission channelling (EC) and X-ray absorption fine structure (XAFS) techniques. These studies agree that RE ions at low concentrations (whether they are incorporated during growth or introduced later by ion implantation) predominantly occupy Ga substitutional sites, as expected from considerations of charge equivalence. We combine this result with some examples of the welldocumented richness of optical spectra of GaN:RE3+ to suggest that the luminescence of these materials may be ascribed to a family of rather similar sites, all of which feature the REGa defect.