BEDREDDINE, Mohammede AMINE2024-01-252024-01-252019https://theses.univ-temouchent.edu.dz/opac_css/doc_num.php?explnum_id=2664http://dspace.univ-temouchent.edu.dz/handle/123456789/1618Calculations of first principles are carried out to obtain the structural, electronic and optical properties of the ternary alloy Cu 2 SnS 3 . We applied the plane wave (PW) and pseudo- potential approach in the Framework of density functional theory (DFT) using generalized gradient approximation (GGA) and gradient approximation Of the Perdew-Burke-Ernzerhof (PBE). The results of the structural and electronic properties are in good agreement with the experimental values.DFT; PW-pseudopotential, copper chalcogenide, structural and electronic properties.