The coloring and fading time is an index of tungsten oxide thin film discoloration property. Switch response time means the coloring and fading time of thin film under adding voltage.
When the input voltage is ±1V, test reaction time of electrochromic thin film under coloring state and fading state, it turns out that the reaction time of nano thin film is shorter.
Under the role of forward voltage, it takes five seconds for coloring, the shortest would take 4 seconds. Within 10 seconds, the color of the film will be completely stable. Under reverse voltage, the film will completely fade in 3-5 seconds. Thus, nano electrochromic film has a good switching response time.