TITLE

Optical characterization of high-purity cubic GaN grown on GaAs (001) substrate by metalorganic chemical vapor deposition

AUTHOR(S)
Xu, Dapeng; Yang, Hui; Li, J. B.; Li, J.B.; Zhao, D. G.; Zhao, D.G.; Li, S. F.; Li, S.F.; Zhuang, S. M.; Zhuang, S.M.; Wu, R. H.; WU, R.H.; Chen, Y.; Li, G. H.; Li, G.H.
PUB. DATE
May 2000
SOURCE
Applied Physics Letters;5/22/2000, Vol. 76 Issue 21
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The optical properties of cubic GaN films have been investigated in the temperature range of 10-300 K. Five peaks were observed at 10 K. From the dependence of photoluminescence emissions on the temperature and excitation intensity, we have assigned two of the five peaks (2.926 and 2.821 eV) to donor-acceptor pair (DAP) transitions. Furthermore, these two peaks were found to be related to a common shallow donor involved in the peak position previously reported at 3.150 eV. The intensities of DAP transitions were much weaker than that of excitonic emission even at low temperature, indicating a relatively high purity of our samples. © 2000 American Institute of Physics.
ACCESSION #
4414613

 

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