Temperature effect on structural and optical properties of V₂O₅ thin films prepared by spray pyrolysis technique

Abstract

In this work, the effect of substrate temperature on structural and optical properties of V 2 O 5 thin films has been characterized by X-ray diffraction (XRD); SEM and transmission. The films mince has been prepared by Reactive Chemical Spraying technology in Liquid Phase (RCSLP) on glass substrates preheated at (350, 400, 450 and 500 °C). The X-ray diffraction analysis confirms that all layers are polycrystalline, and the preferred orientation of V 2 O 5 is the (001) plane. The morphology of V 2 O 5 thin films are porous nature and their particle’s shape is three-dimensional. The transmittance and absorbance of thin film were measured from which the optical constants (Energy gap, Refractive index, Absorption coefficient, Extinction coefficient and Optical dielectric constant) were determined.