Rezumat articol ediţie STUDIA UNIVERSITATIS BABEŞ-BOLYAI

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The antimony doped tin-dioxide (ATO) thin nanostructured films are known for their wide range of applications. The paper presents the preparation and characterization of quasi-one dimensional ATO films deposited on glass substrate. Films have been prepared by using the sol-gel one step multipledip-coating and spray pyrolysis techniques. Sb concentration in the precursor solution was 5 and 15 mol%, respectively. The crystalline structure of the ATO films was studied by X-ray Diffraction (XRD) which showed their polycrystalline structure with peaks belonging to the tetragonal rutil structure of SnO₂. Atomic Force Microscopy (AFM) revealed the films nanostructured morphology and different geometrical shapes of the nanoparticles depending on the route of preparation and doping degree. X-ray Photoelectron Microscopy (XPS) measurements showed that the main components at the surface of the films are: Sn, Sb, O, Cl and also that Sn and Sb are present in their oxidated state Sn⁴⁺ and Sb⁵⁺ , respectively.

Keywords: ATO film, sol-gel technique, spray pyrolysis, crystalline structure, morphology.