Studies on Optical Properties of ZnS Thin Film by Thermal Evaporation Technique

The most significant process for optical coating is variant of vacuum deposition. Zinc sulphide having direct and large band gap which is use in opto electronics. By using ZnS material in thermal evaporation technique and characterizing the minimum reflectance and maximum transmittance in visible wavelength and energy gap increases with increasing thickness having direct and large band gap. When ZnS thin films doped with similar material then the transmission band can be widened in IR region. On this method we make many applications over IR windows and scintillation detectors and other electronic devices.