Disorder effects on electronic and optical properties of the ternary GaxIn1−xP (x = 0.25, 0.50, and 0.75) alloy

We have performed first‐principles calculations for the electronic and optical properties of GaxIn1−xP alloys for compositions x = 25, 50, and 75%. The effects of Ga composition on the electronic density of states, dielectric functions, and pressure coefficients are discussed in detail using a simpl...

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Bibliographic Details
Published in:physica status solidi (b) 2009-10, Vol.246 (10), p.2294-2300
Main Authors: Kumar, S., Parashari, Satyam S., Auluck, S.
Format: Article
Language:English
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Summary:We have performed first‐principles calculations for the electronic and optical properties of GaxIn1−xP alloys for compositions x = 25, 50, and 75%. The effects of Ga composition on the electronic density of states, dielectric functions, and pressure coefficients are discussed in detail using a simple cubic structure and a special quasi‐random structure. Effective masses are calculated along the Γ(000) symmetry point. Overall, the calculated properties are in agreement with the available experimental data. Our calculations show that the direct band gap and the electron effective masses vary nonlinearly with concentration x.
ISSN:0370-1972
1521-3951
DOI:10.1002/pssb.200945016