Tungsten oxide and molybdenum doped tungsten oxide electrochromic films have been electrochemically prepared from a metal peroxide bath and experimentally tested. They were characterized by electrical and optical methods, using cyclic voltammograms and calculating the charge capacity as a function of the number of deposition cycles.
The color of the electrochromic WO3 film is strongly altered by doping it with molybdenum. Electrochromic W{\textendash}Mo oxide films were fabricated by adding different percentages of molybdenum to tungsten oxide, ranging from 0.5\% to 7\% weight of deposition solution. Normal optical transmittance was also measured and evidence is given of different behavior if the switching for oxidation and reduction cycle, so that coloration occurs in a shorter time than the bleaching. The time constant of the process tends to increase as a function of the molybdenum oxide doping concentration.
}, year = {1992}, booktitle = {Solar Energy Materials and Solar Cells}, journal = {Solar Energy Materials and Solar Cells}, series = {Solar Energy Materials and Solar Cells}, volume = {28}, number = {3}, pages = {233-247}, language = {eng}, }