A Band-Gap Energy Model of the Quaternary Alloy InxGayAl1?x?yN using Modified Simplified Coherent Potential Approximation
ZHAO Chuan-Zhen1,2**,ZHANG Rong 1**, LIU Bin1, LI Ming1, XIU Xiang-Qian1, XIE Zi-Li1, ZHENG You-Dou1
1Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, Nanjing National Laboratory of Microstructures, Department of Physics, Nanjing University, Nanjing 210093 2School of Electronics and Information Engineering, Tianjin Polytechnics University, Tianjin 300387
Abstract：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.
. [J]. 中国物理快报, 2013, 30(7): 76101-076101.
ZHAO Chuan-Zhen,ZHANG Rong , LIU Bin, LI Ming, XIU Xiang-Qian, XIE Zi-Li, ZHENG You-Dou. A Band-Gap Energy Model of the Quaternary Alloy InxGayAl1?x?yN using Modified Simplified Coherent Potential Approximation. Chin. Phys. Lett., 2013, 30(7): 76101-076101.
2013, Vol. 30 
