Electrochromic properties of TiO2 thin films grown by thermionic vacuum arc method

Publication date: 31 October 2017
Source:Thin Solid Films, Volume 640
Author(s): Erbil Şilik, Suat Pat, Soner Özen, Reza Mohammadigharehbagh, H. Hakan Yudar, Caner Musaoğlu, Şadan Korkmaz
Titanium dioxide (TiO2) thin films were deposited on fluorine tin oxide/glass and indium tin oxide/glass substrates by thermionic vacuum arc in this work. The deposited films phases were identified as anatase and rutile from X-ray Diffractions. The bandgap of the samples has been found ~3.0eV. The electrochromic properties of TiO2 thin films were investigated using cyclic voltammograms, chronoamperometry and chronocoulometric studies. Electrochemical cation intercalation was promoted using 0.1M LiClO4 in propylene carbonate. Inserted/extracted charge, diffusion coefficient, coloration efficiency, optical modulation, and reversibility was calculated. Best results were obtained for TiO2/FTO sample with 18.6cm²/C coloration efficiency. Deposited TiO2 thin films optical and morphological studies also covered.