Spray pyrolysis deposition of thin films

Ternary compound thin films have been prepared on Pyrex glass substrates by the spray pyrolysis process using tin chloride and n, n-dimethylthiourea as starting materials. The depositions were carried out at a substrate temperature of . The identification of the phase was achieved by means of x-ray diffraction measurements. The optical reflectance and transmittance of the prepared films were used to obtain the variation of the refractive index and the extinction coefficient as a function of the wavelength. These calculated values were used to find the absorption coefficient and the optical bandgap and gave . From measurements of the conductance as a function of , a dark activation energy was determined with a value of 1.02 eV.