Document Type
Article
Original Publication Date
2006
Journal/Book/Conference Title
Applied Physics Letters
Volume
89
Issue
23
DOI of Original Publication
10.1063/1.2400074
Date of Submission
April 2015
Abstract
The authors observed a drastic reduction of the yellow luminescence (YL) intensity in carbon-doped semi-insulating GaN in air or oxygen ambient as compared to the intensity in vacuum. The YL intensity dropped about 300 times while the exciton emission remained almost unchanged. The authors assume that the donor-acceptor-pair transitions involving a gallium vacancy complex in a thin near-surface region cause the strong YL. Oxygen molecules or ions induce the surface states acting as a very efficient channel of nonradiative recombination. The results indicate that carbon may not be involved in the acceptor responsible for the YL band in GaN:C.
Rights
Reshchikov, M.A. Strong suppression of the yellow luminescence in C-doped GaN in air ambient. Applied Physics Letters, 89, 232106 (2006). Copyright © 2006 AIP Publishing LLC.
Is Part Of
VCU Physics Publications
Comments
Originally published at http://dx.doi.org/10.1063/1.2400074