Simultaneous composition and cathodoluminescence spectral mapping of III-nitride structures
Edwards, P.R. and Martin, R.W. and O'Donnell, K.P. and Watson, I.M. (2003) Simultaneous composition and cathodoluminescence spectral mapping of III-nitride structures. Journal of Physics: Conference Series (180). pp. 293-296. ISSN 1742-6596
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Gallium nitride based structures have been characterised using the novel approach of simultaneous wavelength-dispersive X-ray microanalysis and cathodoluminescence spectral mapping. Details are presented of the instrumentation developed to carry out such measurements. Application of the technique to MOVPE-grown indium gallium nitride epilayers shows microscopic variations in the indium content, which correlate directly with spatially-dependent shifts observed in the peak wavelength of the luminescence spectrum. Regions of higher indium content are shown to emit at lower energy, mirroring equivalent macroscopic observations
ORCID iDs
Edwards, P.R. ORCID: https://orcid.org/0000-0001-7671-7698, Martin, R.W. ORCID: https://orcid.org/0000-0002-6119-764X, O'Donnell, K.P. ORCID: https://orcid.org/0000-0003-3072-3675 and Watson, I.M. ORCID: https://orcid.org/0000-0002-8797-3993;-
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Item type: Article ID code: 37947 Dates: DateEvent2003PublishedSubjects: Science > Physics Department: Faculty of Science > Physics
Faculty of Science > Physics > Institute of PhotonicsDepositing user: Pure Administrator Date deposited: 27 Feb 2012 15:08 Last modified: 02 Sep 2024 00:39 URI: https://strathprints.strath.ac.uk/id/eprint/37947