Luminescence of epitaxial GaN laterally overgrown on (0001) sapphire substrate: Spectroscopic characterization and dislocation contrasts
- 1 April 2001
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 89 (7) , 3736-3743
- https://doi.org/10.1063/1.1349864
Abstract
Photoluminescence and cathodoluminescence spectra are recorded on epitaxial GaN laterally overgrown on (0001) sapphire. Photon recycling, which influences the position of the near band edge transition, is evidenced in cathodoluminescence (CL) spectra by changing the accelerating voltage. CL monochromatic images recorded at different wavelengths show that dislocations act as efficient nonradiative recombination centers, and that they are not responsible for the yellow band.This publication has 56 references indexed in Scilit:
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