Properties Of Electrochromic Oxides Deposited By The Sol-Gel Process

Deposition of electrochromic metal oxide thin films by dip coating has received scant attention in the literature. This paper describes the applicability of the dip coating technique to the process and performance needs of electrochromic devices, particularly electrochromic windows. Coloring efficiencies at 550nm of 49 to 38 cm2 /C are reported for tungsten oxide dip coatings that have been fired over a 25°C to 300°C range. Rutherford back scattering spectroscopy was used to verify that the mole ratio in a mixed oxide electrochromic coating matches the mole ratio in the dip solution from which it was deposited.