Growth and characterization of chemical bath deposited zinc sulphide thin films

Zinc sulphide thin films were deposited on optical glass platelets, from chemical bath containing variable amounts of thiourea, zinc acetate, ammonia and sodium citrate. The growth aspects of ZnS/glass/ZnS heterostructures by monolayer technique and their subsequent characterization were studied. The samples were investigated by FT-IR and UV-VIS absorption spectroscopy, photoluminescence measurements, scanning electron microscopy and X-ray diffraction. The optical and morpho-structural characteristics of zinc sulphide layers are strongly influenced by reagent concentrations as well as by deposition time.