ZnO Powder was mixed with 2.5 wt% of Al2O3 powder using solid state reaction. This ceramics bulks was used to prepare target of 2 inch diameter for sputtering system. Al doped ZnO (AZO) thin films were synthesized on ITO coated corning glass substrate using RF sputtering. The structural, morphology and optical properties were studied using X-ray diffraction, SEM, UV-VIS-IR spectrophotometer. X-ray diffraction show the crystalline hexagonal wurtzite structure of Al doped ZnO powder and thin film. The crystallite size of AZO powder and film were 64.8nm & 124.2 nm respectively. The higher transmittance (97%) was observed for AZO powder than that of thin film was (89%). The optical band gap of AZO powder and thin film were 3.24 eV and 3.19 eV respectively. Characterization of the material was done for their optoelectronics properties to be used in solar cells.
AZO powder and thin film, structural, transmittance and optical bandgap
