Morphology and optical properties of cubic phase GaN epilayers grown on (001) Si
M. Godlewski
Institute of Physics, Polish Academy of Sciences
E. M. Goldys
Semiconductor Science & Technology Laboratory, Macquarie University
M. R. Philips
Microstructural Analysis Unit, University of Technology
J. P. Bergman, B. Monemar
Department of Physics and Measurement Technology, Linköping University
R. Langer, A. Barski
CEA/Grenoble, Département de Recherche Fondamentale sur la Matière Condensée/SP2M
This article was received on Tuesday, June 23, 1998 and
accepted on Tuesday, November 24, 1998. Abstract
Optical
properties of GaN epilayers of a cubic phase are studied. We show a strong
influence of the sample morphology on intensity of the edge emission. Whereas
edge luminescence is reduced at the grain boundaries, red emission is spatially
homogeneous.