ABSTRACT

Solid state electrochromic devies (ECD) are of considerable technological and considerable  interest due to their controllable transmission, absorption and/or reflectance. For instance, major applications of these devices are in smart windows that can regulate the solar gains of buildings and in glare attenuation in automobile rear view mirrors. Other applications include solar cells, small-and large-area  flat panel displays, frozen monitoring and  document authentication.

There are different kinds of organic, inorganic and organic-inorganic films that can be used to make electrochromic devices. Thin electrochromic films can be WO₃, Nb₂O5, Nb₂O₅:Li⁺ or Nb₂O₅-TiO₂ coatings, ions storage films CeO₂-TiO₂, CeO₂-ZrO₂ or CeO₂ –TiO₂ –ZrO₂ and electrolytes like  Organically Modified Electrolytes (ormolytes)  or polymeric films also based on natural polymers , like starch and cellulose. The latter ones are very interesting due to their high ionic conductivity, transparency and good mechanical properties.

This paper describes the ECDs components and different electrochromic devices with solid polymeric electrolytes properties.