2023 年 33 巻 1 号 p. 7-9
We fabricated an electrochromic device with a cellulose substrate impregnated with a dimethyl terephthalate-based electrochromic solution. By cutting the cellulose substrate into a shape of an alphabetical letter, we succeeded in displaying an electrochromic letter. The simple fabri- cation and the biodegradable cellulose substrate potentially contribute to the sustainability-oriented development.