Substrate effect on electrochromic properties of Nb2O5:TiO2 nanocomposite thin films deposited by thermionic vacuum arc. (August 2022)

• Record Type: Journal Article
• Authors: Özgür, Nihan Akkurt; Pat, Suat; Mohammadigharehbagh, Reza; Korkmaz, Şadan
• Is Part Of: Vacuum. Volume 202(2022)
• Publication Date: 2022-08
• Subjects: TiO2 -- Nb2O5 -- Electrochromic -- TVA -- Nanocomposite thin films; Vacuum -- Periodicals; 621.55
• DOI: 10.1016/j.vacuum.2022.111186
• Languages: English
• ISSNs: 0042-207X

Abstract

Abstract: In this paper, substrate effect on electrochromic properties of Nb2 O5 :TiO2 nanocomposite thin films have been investigated. Thin films have been deposited by thermionic vacuum arc deposition technology. Nb2 O5 and TiO2 are known to be electrochromic materials. Nb/Ti rate was obtained 1.4. Average thicknesses of the films were found as 113 nm and 111 nm and band gap values for bleached states were calculated as 3.96 eV and 3.85 eV for the films deposited onto ITO and FTO coated glass substrates, respectively. The coloration efficiency values were calculated as 17 cm 2 /C and 26 cm 2 /C for the film onto ITO layered glass substrate and 31 cm 2 /C, 23 cm 2 /C and 24 cm 2 /C for the film onto FTO layered glass substrate at a different wavelength values in the visible region. The obtained results shows that films for each transparent conductive oxide material is promising material to obtain the high performance TiO2 active layer. Highlights: Nb2 O5 :TiO2 nanocomposite thin films were used for the electrochromic applications. Nb/Ti rate was obtained 1.4. Coloring times were 14 s and 35 s for the film deposited onto ITO and FTO substrates, respectively. Bleaching time were 16 s and 20 s for the film deposited onto ITO and FTO substrates, respectively.