The First Truly All‐Polymer Electrochromic Devices

Using poly(3,4‐ethylenedioxythiophene)–poly (styrene sulfonate) (PEDOT–PSS) as the transparent electrode material, all‐polymer‐based electrochromic devices (ECDs) have been constructed from only organic and polymeric components. In the picture shown, an absorption/transmissive‐type ECD maintained in its colored state is bent to demonstrate its flexibility.