| abstract |
(57) Abstract: An EC device having a high light transmittance at the time of color erasing and having excellent response speed and repeated durability when driven at a high contrast ratio is provided. A pair of transparent electrodes facing each other, An oxidative coloring electrochromic layer 3, a mixed layer 11 composed of an oxidative coloring electrochromic substance and a metal oxide, a transparent ion conductive layer 4, and a reducing chromogenic electrochromic layer sandwiched between the transparent electrodes 2a and 2b. An electrochromic device having. |