Zinc sulfide particles layer were grown on FTO glass and stainless steel substrates by electrode position technique from aqueous solution that contained 0.1 N zinc sulfate, 0.1 N sodium thiosulfate and 0.1 N triethanolamine was used as complexing agent. The deposing potential was analyzed by cyclic voltammetry technique. The ZnS particle growth was studied in the range of deposition time from 10 to 40 minutes. The thickness of layer was found to be the highest, 3.92 µm, at 20 min. The various percentage of complexing agent, pH of solution and thicknesses of film were characterized by scanning electron microscope (SEM) and UV-Visible spectrophotometer. The effects of complexing agent, pH of solution and thickness of layer on morphological and optical properties of ZnS were investigated. The Electrical resistivity of ZnS was found thickness dependent. The Chemical Composition of ZnS particles analysed by EDAX (Energy Dispersive Analysis by X-ray).

No abstract

Zinc sulfide thin films were synthesized by means of cyclic voltammetry technique onto stainless steel substrate. The electrolyte bath of aqueous solution containing 0.1 N Zinc sulfate (ZnSO 4 •7H 2 O) and 0.1 N sodium thiosulfate (Na 2 S 2 O 3 .5H 2 O) with 0.1 N Triethanolamine was used as complexing agent. Cyclic voltammetry was employed to measure its ranges of deposition voltages and thickness of ZnS thin films can be controlled by number of voltage cycles applied during deposition. Also we obtained hysteresis curve that imply its potential application. The bath temperatures were varies from 30 • C to 60 • C. The Influence of bath temperatures on optical properties and morphology has been investigated in details. The electrochemical deposited ZnS thin films were characterized by UV-visible spectroscopy and the field emission scanning electron microscopy (FESEM). The UV-visible spectroscopy analysis showed that energy gap varied between 3.99 to 3.79 eV depending on bath temperatures. The FESEM analysis showed that ZnS thin film deposited at various bath temperatures are polycrystalline nature, homogenous, uniform with randomly oriented nanoflakes and nanorods. The good quality of zinc sulphide thin film could be prepared in the presence of triethanolamine.