Electron diffusion and electrochromism in MoO3 amorphous films

Abstract

Coloration by electron diffusion and electrochromism was studied in HxMoO3 amorphous films following the technique of Crandall and Faughnan et al. in HxWO3. The measured diffusion coefficient for electrons was D=7.5×10−4 cm2/sec and the emf of the cell Cu-In-glycerol +H2SO4-HxMoO3-SnO2-Cu was measured as a function of x. The dynamics of the coloration process induced by small changes of the potential across the HxMoO3-electrolyte interface was studied by a photometric method.