The valence and conduction band structure in Cd 1−xMn xF 2 crystal by means of UPS

Abstract

The density of states distribution in the valence and conduction band was determined for Cd 1− x Mn x F 2 crystals ( x = 0; 0.02 and 0.1) on the basis of the EDCs obtained for hv = 21.2 eV and hv = 40.8 eV. The smooth changes of the shape of EDCs were obtained for different alloy compositions for hv = 40.8 eV while for the hv = 21.2 eV EDCs drastic changes occur due to the structure of the final density of states. The peaks of density of states obtained for CdF 2 valence band in X 5 ′, L 2,1 and X 5, points and conduction band in X 1 and L 1 points of the B.Z. changes with the increase of x in Cd 1− x Mn x F 2 alloy.