The band gap bowing of CdS x Te1−x alloys beyond the virtual crystal approximation-Reference-Cited by-同舟云学术

The band gap bowing of CdS x Te1−x alloys beyond the virtual crystal approximation

Published:2020-12-01 Issue:4 Volume:9 Page:1056-1059
ISSN:2046-0147
Container-title:Emerging Materials Research
language:en
Short-container-title:Emerging Materials Research

Author:

Mezrag Fadila¹^ORCID,Bouarissa Nadir¹^ORCID,Fares Nour El-Houda²^ORCID

Affiliation:

1. Laboratory of Materials Physics and Its Applications, Physics Department, Faculty of Science, University of M’sila, M’sila, Algeria

2. Department of Informatics, Faculty of Computer Science and Mathematics, University of Bordj-Bou-Arréridj, Bordj-Bou-Arréridj, Algeria; Laboratory of Materials Physics and Its Applications, Physics Department, Faculty of Science, University of M’sila, M’sila, Algeria

Abstract

The effect of alloy disorder on direct and indirect band gap energies in CdS x Te1−x semiconducting alloys has been investigated. The calculations are performed using a pseudopotential approach within the virtual crystal approximation (VCA). In the simplest approximation based on the VCA, the fundamental band gap bowing of CdS x Te1−x is found to be in disagreement with that of the experiment. The value of this bowing is highly improved by taking into account the compositional disorder effect (i.e. going beyond the VCA).

Publisher

Thomas Telford Ltd.

Subject

Condensed Matter Physics,General Materials Science

Link

https://www.icevirtuallibrary.com/doi/pdf/10.1680/jemmr.19.00187

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