Abstract

In this study, the electrochromic thin film of tungsten oxide $({\hbox{WO}}_{1-x})$ was electrodeposited on indium tin oxide/glass (ITO/Glass) by potentiostatic method. The electrochemical characteristic and optical characteristic were analyzed by different deposition time, and the electrochromic behaviors of the ${\hbox{WO}}_{1-x}/{\hbox{ITO}}/{\hbox{Glass}}$ were performed in a 0.1 M lithium perchlorate/propylene carbonate (LiClO $_{4}$ /PC) electrolyte. The deposition time of ${\hbox{WO}}_{1-x}$ thin film was set at 1200 seconds, which optimal transmittance variation $(\Delta{\rm T}\hbox{\%})$ , and coloration efficiency $(\eta)$ were 73.2% and 53.4 cm $^{2}$ /C, respectively.

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