Reflectivity ofZnSexTe1xSingle Crystals

Abstract
Reflectivity spectra of ZnSexTe1x single crystals were measured from 2.0 to 6.6 eV through the whole range of mole fraction x at room temperature. The variation of the band gaps such as the E0, e1, E1, and E2 with x is reported. The E0, e1, and E1 gaps exhibit spin-orbit splitting. The lowest gap E0 shows a minimum in energy at x=0.33. The minimum value is 2.13 eV.