Pulsed laser deposited (PLD) GaN and its powder precursor

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Abstract

A comparative study of pulsed laser deposited (PLD) films and their powder precursor using low temperature photoluminescence (PL) spectroscopy and cathodoluminescence (CL) imaging is presented. The PLD films show several well-defined features in low-temperature PL. Although the free exciton transition is absent, two sharp bands appear, quite close to the band-edge, at 3.261 eV and 3.410 eV, in addition to the familiar donor-acceptor pair band near 3.2 eV and the well-known yellow band. CL imaging reveals relatively poor crystallinity of the micropowder.

Original languageEnglish
Number of pages1
Publication statusPublished - 1 Jan 1998
EventProceedings of the 1998 International Symposium on Information Theory, CLEO/EUROPE'98 - Glasgow, Scotland
Duration: 14 Sep 199818 Sep 1998

Conference

ConferenceProceedings of the 1998 International Symposium on Information Theory, CLEO/EUROPE'98
CityGlasgow, Scotland
Period14/09/9818/09/98

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O'Donnell, K. P., Middleton, P. G., & Trager-Cowan, C. (1998). Pulsed laser deposited (PLD) GaN and its powder precursor. Paper presented at Proceedings of the 1998 International Symposium on Information Theory, CLEO/EUROPE'98, Glasgow, Scotland, .