ملخص: MoO3 and V2O5 thin films were prepared on glass substrates by Spray Pyrolysis technique at a substrate temperature of 423 K. The precursor solutions were obtained by varying the concentrations of MoCl5 and VCl3 in bi:distilled water. The structural investigation conducted by X:ray diffraction showed that MoO3 and V2O5 thin films were polycrystalline with orthorhombic structure. The optical properties studied in the 300:2500 nm range suggest that the thin film behaviours are related to bound electronic states. The optical band gaps have been estimated from slopes of ln([alpha]h[nu]) versus h[nu] plots of MoO3 and V2O5 films were 3.35 and 2.44 eV, respectively. The electrical conductivity was measured using four probes method.

لغة: فرنسية