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.
Buy this Article
|