Solution growth, characterization and applications of zinc sulphide thin films

Zinc sulphide (ZnS) thin films were successfully deposited on glass substrates under varying deposition conditions using the electroless or solution growth technique. The film properties investigated include their transmittance/renectance/absorbance spectra, bandgap, optical constants, and thicknesses. Films grown under certain parametric conditions were found to exhibit high transmittance (similar to 64-98%), low absorbance, and low reflectance in the ultraviolet (uv)/visible/near infrared (nir) regions up to 1.00 mu m Those obtained under other conditions exhibited high transmittance (similar to 78-98%) and low absorbance (similar to 0.01-0.1) in the uv/visible regions but low transmittance (similar to 30-37 and high absorbance (similar to 0.56) in the nir region. These characteristics revealed their suitability for various solar device applications. Bandgap range E(g) similar to 3.7-3.8 eV and thickness range t similar to 0.07 - 0.73 mu m were obtained.