| Citation: |
Xiong Deping, Ren Xiaomin, Wang Qi, Shu Wei, Zhou Jing, Lü Jihe, Huang Hui, Huang Yongqing. Theoretical Analysis of Band-Gap Properties of BxIn1-xP and BxGa1-xP Alloys[J]. Journal of Semiconductors, 2007, 28(6): 860-864.
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Xiong D P, Ren X M, Wang Q, Shu W, Zhou J, Lü J, Huang H, Huang Y Q. Theoretical Analysis of Band-Gap Properties of BxIn1-xP and BxGa1-xP Alloys[J]. Chin. J. Semicond., 2007, 28(6): 860.
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Theoretical Analysis of Band-Gap Properties of BxIn1-xP and BxGa1-xP Alloys
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Abstract
The band gaps of ternary zinc blende BxIn1-xP and BxGa1-xP alloys are calculated using first principles in the generalized gradient approximation (GGA),and their bowing parameters are obtained.For BxIn1-xP,the bowing parameters are b_Eg(Γ)=4.32eV and b_Eg(X)=1.8eV,the crossover composition from direct to indirect gap is 0.47,the direct gap varies from 1.33 to 1.47eV,and the addition of a small amount of B will reduce the alloy gap.For BxGa1-xP,the whole x range is indirect gap,and the bowing parameters are b_Eg(Γ)=1.37eV and b_Eg(X)=2.46eV.The reason that BxIn1-xP and BxGa1-xP have relatively large bowing parameters is the large lattice mismatch between their binary alloys.-
Keywords:
- boride alloy,
- bowing parameter,
- band-gap,
- GGA
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References
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Proportional views
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