Band spectrum and optical absorption in n-CdSnAs2

Abstract

Using the crystal splitting (CS) method in perturbation theory, the energy spectrum of the valence zone and the conductivity zone is calculated in the neighborhood of the point of the Brillouin zone for the semiconductor CdSnAs2. The parameters necessary for calculating the spectrum were found from analysis of the edge of optical absorption in n-CdSnAs2. Using the found values of the parameters, the effective masses at the Γ point and the density of states are calculated.