Abstract:
Zinc Oxide (ZnO), Zinc Sulphide (ZnS) and Zinc Oxide Sulphide (Zn (O, S)) thin films were deposited
on a clear soda lime glass substrates using chemical bath deposition at room temperature. The structure
of ZnO, ZnS and Zn (O, S) thin films was found to be hexagonal Wurtzite with <100> and <111> orientations
for ZnO and ZnS thin films respectively based on XRD measurements. Field Emission Scanning Electron
Microscopy images revealed smooth surface for the films with the formation of flakes. Transmission
spectra of the films were studied by UV-Vis-NIR Spectrophotometer and the transparency was found to be
above 80% for ZnO, ZnS and Zn (O, S) thin films. The optical band gap was found to be around 3.3 eV for
ZnO film, 3.5 eV for ZnS and 3.0 eV for Zn (O, S) film which is in accordance with the reported values. The
results show that the quality ZnO, ZnS and Zn (O, S) buffers layers can be deposited using Chemical
bath deposition.
