Electrochromic investigation of sol–gel-derived thin films of TiO2–V2O5

Thin films of TiO2 and TiO2–V2O5 were obtained by dip-coating sol–gel technique. Sols were prepared from titanium ethoxide and inorganic V2O5 sol received by dissolution of vanadium pentoxide in hydrogen peroxide. Sol–gel TiO2 and TiO2–V2O5 films are deposited on conductive glass substrates. TiO2 and TiO2–V2O5 systems were characterized by FTIR and Raman spectroscopy. Optical transmittance measurements were carried out. Electrochromic characterization was recorded by cyclic voltammetry using three-electrode arrangement. All samples demonstrated electrochromic effect.