Effects of doping ratios on the electrochromic features of WO3-VO2 nano-composite films

• Published in: Optik (Stuttgart) Vol. 262; p. 169195
• Main Author: Akkaya Arıer, Ümit Özlem
• Format: Journal Article
• Language: English
• Published: Elsevier GmbH 01-07-2022
• Subjects: Electrochromic; Nano-composite; Sol-gel; WO3-VO2; Electrochromic; Sol-gel; WO3-VO2; Nano-composite
• ISSN: 0030-4026; 1618-1336
• DOI: 10.1016/j.ijleo.2022.169195

Tungsten oxide (WO3) doped vanadium oxide (VO2), WO3:VO2 nano-composite films were synthesized on ITO glasses by spin-coating method. The electrochromical, structural and optical properties of WO3:VO2 nano-composite films were determined by changing WO3:VO2 ratio. The doping ratio has an important role in controlling the electrochromic properties of the WO3 doped VO2 films. The optimum WO3:VO2 ratio was obtained to be 0.2 in terms of the best color efficiency 67.78 cm2/C. The highest diffusion coefficient value was evaluated for the WO3:VO2 ratio:0.2, to be 4.79 × 10−13 cm2/s. Transmission value of 79.4% at 600 nm is measured for this study.
•WO3-VO2 nano-composite films were deposited on glass substrates by spin-coating method.•The electrical, structural and optical properties of WO3-VO2 nano films were characterized.•The properties of films were controlled by changing the WO3:VO2 ratios.•The highest diffusion coefficient value was evaluated for WO3:VO2 ratio:0.2, to be 4.79 × 10 − 13 cm2/s.