Surface Properties of CdS Single Crystals

Abstract
Properties of electrical contact on cadmium sulfide single crystals were studied. For cleaved surface, d.c. rectifying characteristics and capacitance relation show the existence of Schottky-type barrier. The differences from the properties of crystal bulk and the dispersion of surface admittance are considered due to the effect of multicontact. For polished surface, small rectification ratio and high resistance suggest the existence of insulating layer. The dependence of capacitance on biasing field also supports the model.