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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 Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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Lattice site location of optical centers in GaN : Eu light emitting diode material grown by organometallic vapor phase epitaxy

Lorenz, K. and Alves, E. and Roqan, I. S. and O'Donnell, K. P. and Nishikawa, A. and Fujiwara, Y. and Bockowski, M. (2010) Lattice site location of optical centers in GaN : Eu light emitting diode material grown by organometallic vapor phase epitaxy. Applied Physics Letters, 97 (11). p. 111911. ISSN 0003-6951

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Abstract

Eu-doped GaN was grown by organometallic vapor phase epitaxy at temperatures from 900 to 1100 degrees C. Eu incorporation is influenced by temperature with the highest concentration found for growth at 1000 degrees C. In all samples, Eu is incorporated entirely on substitutional Ga sites with a slight displacement which is highest (similar to 0.2 angstrom) in the sample grown at 900 degrees C and mainly directed along the c-axis. The major optical Eu3+ centers are identical for in situ doped and ion-implanted samples after high temperature and pressure annealing. The dominant Eu3+ luminescence lines are attributed to isolated, substitutional Eu. (c) 2010 American Institute of Physics. [doi:10.1063/1.3489103]