A study for CNDO efficiency for band structure calculations of IV-covalent materials : (Sn, Ge, Si and C)‎

الملخص EN

Lattice constant, cohesive energy, direct band gap and valence band width had been calculated for grey tin by using (CNDO-LUC) method, then we had been making a comparison with experimental and other workers results for ( C, Si, Ge and Sn ) with zinc-blende structure in order to study the efficiency of this method.

The results had showed that this method is good for lattice constant and bad for other properties all at the same time.