Electrodeposition of nano-granular tungsten oxide thin films for smart window application

Tungsten oxide (WO3) thin films have been electrodeposited in a solution containing tungsten and ethanol-water. The structural, morphological and electrochromic properties of electrodeposited WO3 thin film were studied. The results indicate that electrodeposited WO3 thin film exhibited amorphous nature, closed packed nano-granular morphology, good coloration efficiency of 140.79 cm2/C and visible high transmittance of 94.63%.