Title: Optical energies of AlInN epilayers
Authors: Wang, K ×
Martin, R. W
Amabile, D
Edwards, P. R
Hernandez, S
Nogales, E
O'Donnell, K. P
Lorenz, K
Alves, E
Matias, V
Vantomme, André
Wolverson, D
Watson, I. M #
Issue Date: Apr-2008
Publisher: Amer inst physics
Series Title: Journal of Applied Physics vol:103 issue:7 pages:1-3
Article number: 073510
Abstract: Optical energy gaps are measured for high-quality Al1-xInxN-on-GaN epilayers with a range of compositions around the lattice match point using photoluminescence and photoluminescence excitation spectroscopy. These data are combined with structural data to determine the compositional dependence of emission and absorption energies. The trend indicates a very large bowing parameter of approximate to 6 eV and differences with earlier reports are discussed. Very large Stokes' shifts of 0.4-0.8 eV are observed in the composition range 0.13 < x < 0.24, increasing approximately linearly with InN fraction despite the change of sign of the piezoelectric field. (C) 2008 American Institute of Physics.
ISSN: 0021-8979
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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