Photochromic Characteristics of Mixed WO₃ – MoO₃ Thin Films in Alcohol Vapors

Abstract

Abstract The photochromic responses of mixed WO 3 – MoO 3 thin films subjecting to UV irradiation were investigated in reducing environments, and they were compared with those of WO 3 and MoO 3 thin films. It was found that the photochromism of mixed 92% WO 8% MoO 3 thin film in ethanol vapor was significantly enhanced than that of WO 3 or MoO 3 . The associated change in the absorbance (ΔABS) of the mixed‐oxide film was about 1.5 times that of the WO 3 film, and about 2.7 times that of the MoO 3 film.