Electronic Energy Bands in ZnS: Preliminary Results

Preliminary results of the cellular calculations of electronic energy bands in cubic ZnS have been obtained at three points in the Brillouin zone: $\Gamma$, X, $\Lambda$. These results indicate that there is a normal order of states in the valence band, and an energy gap of 6-8 volts at k=(0,0,0) corresponding to the ${{\Gamma }_4}^{\prime }\to {\Gamma }_1$ transition.