Optical properties of Aluminum-Zinc oxide thin filmsPrepared by spray pyrolysis technique

Abstract

Thin films of ZnO:Al about one µm were deposited on glass substrates using spray pyrolysis technique . The optimum spray conditions wereidentified toobtain good compatible between optical and film homogeneously properties. The optical parameters were calculated depending on transmission spectrum in the range (0.3-0.85) µm. The fundamental absorption in the band to band transition was also investigated and energy gap of 3.25 eV was recognized in term of the imaginary part of the dielectric constant.