Effect of voltage and time of electrodeposition on the electrocheromic charactristics of WO3

Document Type : Original Articles

Authors

Parisa Kazemizadeh ¹

Mostafa Mirjalili ²

Ghasem Barati Darband ²

¹ Ferdowsi University of Mashhad, Faculty of Engineering, Department of Metallurgical and Materials Engineering

² Department of Metallurgy and Materials, Faculty of Engineering, Ferdowsi University of Mashhad

10.22067/jmme.2024.85499.1129

Abstract

Electrochromic materials change color when placed in an electric field. Among their most important applications we can mention electrochromic windows. These windows play an important role in saving energy as well as controlling the light and thermal conditions of the room. Tungsten oxide as an electrochromic material has attracted a lot of attention from researchers due to its high color efficiency. We studied the effect of voltage and time on the electrochromic properties to reach optimal conditions for tungsten oxide deposition using electrochemical deposition method. Optical and microstructural investigations and cyclic voltammetry were performed and showed that the cathodic voltage of -450 mV (versus Ag/AgCl reference electrode) and the deposition time of 3 minutes has improved the electrochromic characteristics of tungsten oxide layers in one molar sulfuric acid electrolyte. The color efficiency for this layer was 12.16 cm2/C and it has shown good stability up to 100 cycles.

keywords: electrochromic, electrodeposition, tungsten oxide, ITO glass

Keywords

electrochromic

electrodeposition

tungsten oxide

ITO glass

Subjects

• Electrochemistry

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