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Nb-doped TiO2 thin films deposited by spray pyrolysis method

C. ADOMNITEI1, D. LUCA1, M. GIRTAN2, I. SANDU3, V. NICA1, A.V. SANDU4, D. MARDARE1,*

Affiliation

  1. "Alexandru Ioan Cuza" University, Faculty of Physics, 11 Carol I Blvd., 700506 Iasi Romania
  2. Photonics Laboratory, Angers University, 2, Bd. Lavoisier, 49045, Angers, France
  3. ARHEOINVEST Interdisciplinary Platform, ”Alexandru Ioan Cuza” University of Iasi, 22 Blvd. Carol I, 700506, Iasi, Romania
  4. Faculty of Materials Science and Engineering, ”Gheorghe Asachi” Technical University of Iasi, 64 Blvd. D. Mangeron, 700050, Iasi, Romania

Abstract

Undoped TiO2 and Nb-doped TiO2 thin films have been deposited by spray pyrolysis method on ITO/glass substrates. All the as-deposited films are amorphous, as shown by X-Ray Diffraction. Under certain conditions of heat-treatment in air, the films deposited by pyrolysis became pure anatase. The hydrophilic properties of all the films were investigated, and a comparison was made as a function of the heat treatment, and as a function of Nb doping. Contact angles lower then 3 deg. have been obtained, after irradiation times specific for each film.

Keywords

Nb-doped TiO2, Spray pyrolysis, Hydrophilic properties, SEM-EDX, XRD.

Submitted at: March 29, 2013
Accepted at: June 12, 2013

Citation

C. ADOMNITEI, D. LUCA, M. GIRTAN, I. SANDU, V. NICA, A.V. SANDU, D. MARDARE, Nb-doped TiO2 thin films deposited by spray pyrolysis method, Journal of Optoelectronics and Advanced Materials Vol. 15, Iss. 5-6, pp. 519-522 (2013)