Combined electrochromic-transparent conducting coatings consisting of noble metal, dielectric and WO3 multilayers

These coatings were incorporated into electrochromic devices of the type Glass/WO3/Ag/WO3/1 M LiCLO4-PC/SnO2:F/Glass. Such devices exhibit a transmittance contrast ratio of 10:1 at 550 nm for 90 mC/cm2 of inserted charge density, and a coloration efficiency of about 30 cm2/C at 534 nm. They can also withstand more than 500 voltammetric coloration-bleaching cycles.