Journal
CHINESE PHYSICS LETTERS
Volume 30, Issue 7, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0256-307X/30/7/076101
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Funding
- National Natural Science Foundation of China [60990311]
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Based on modification of the simplified coherent potential approximation, a model for the band-gap energy of InxGayAl1-x-yN is developed. The parameters of the model are obtained by fitting the experimental band-gap energy of their ternary alloys. It is found that the results agree with the experimental values better than those reported by others, and that the band-gap reduction of InxGayAl1-x-yN with increasing In or Ga content is mainly due to enhanced intraband coupling within the conduction band, and separately within the valence band.
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