Thermoluminescence Characteristics of ZnS\CdS\ZnS Window Multilayer Thin Film for Solar Cell Applications

Abstract ZnS/CdS/ZnS multilayer thin film have been prepared by vacuum deposition method and studied using Thermoluminescence (TL) technique in order to investigate the defect structure in these films and the effect of chemical treatment in CdCl2 and heat treatment on the defect structures. A series of electron and hole traps are found in the various deposited samples studied. After treatment, perturbation on the intensity is noted; mobile defect states and charge conversion and/or transfer between defect states are found.