Journal
JOURNAL OF APPLIED PHYSICS
Volume 123, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5029254
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Magnesium (Mg) is the p-type doping of choice for GaN, and selective area doping by ion implantation is a routine technique employed during device processing. While electrically active defects have been thoroughly studied in as-grown GaN, not much is known about defects generated by ion implantation. This is especially true for the case of Mg. In this study, we carried out an electrical characterization investigation of point defects generated by Mg implantation in GaN. We have found at least nine electrically active levels in the 0.2-1.2 eV energy range, below the conduction band. The isochronal annealing behavior of these levels showed that most of them are thermally stable up to 1000 degrees C. The nature of the detected defects is then discussed in the light of the results found in the literature. Published by AIP Publishing.
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