Abstract:
Pseudopotential investigation of energy band gaps and charge distribution in quasi-binary (GaSb)1-x(InAs)x crystals has been reported. To the best of our knowledge, there had been no reported theoretical work on these materials. In agreement with experiment, the quasi-binary crystals of interest showed a significant narrowing of the optical band gap compared to the conventional GaxIn1-xAsySb1-y quaternary alloys (with x = 1 - y). Moreover, the absorption at the optical gaps indicated that (GaSb)1-x(InAs)x is a direct Γ to Γ band-gap semiconductor within a whole range of the x composition. The information derived from the present study predicts that the band gaps cross very important technological spectral regions and could be useful for thermophotovoltaic applications.
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Received 30 August 2002 Published online 1st April 2003
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ID="a"Present address: Physics Department, University of M'sila, 28000 M'sila, Algeria e-mail: N_Bouarissa@yahoo.fr
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Bouarissa, N. Band gaps and charge distribution in quasi-binary (GaSb) (InAs) crystals. Eur. Phys. J. B 32, 139–143 (2003). https://doi.org/10.1140/epjb/e2003-00082-x
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DOI: https://doi.org/10.1140/epjb/e2003-00082-x