Sn and Mn co-doped ZnO thin films have been successfully prepared on glass substrates temperature at 350°C by spray pyrolysis method. Structural and optical properties of pure and co- doped ZnO thin films are studied in detail

The deposited films were characterized by X-ray diffraction (XRDBruker í  rayons X D2 PHASER ) to determine structural properties and the Optical properties of the deposited films were obtained using transmittance measurements in the wavelength range [200–2500 nm] using an UV (Ultra-Violet) Visible JASCO type V-570 double beam spectrophotometer.XRD patterns showed a successful growthwith high quality polycrystalline films on glass substrates. The predominant orientation of thefilms is (002) at dopant concentrations. IncorporationofSn and Mn to the ZnO crystal structure decreased the crystallite size andincreased residual stress of the thin films. All films were highly transparent in the visible regionwith average transmittance of 79 %. Increasing doping concentrations increased the optical bandgap, from 3.12 to 3.21