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- Title
Self‐Powered and Light‐Adaptable Stretchable Electrochromic Display.
- Authors
Wu, Wenting; Poh, Wei Church; Lv, Jian; Chen, Shaohua; Gao, Dace; Yu, Fei; Wang, Hui; Fang, Huajing; Wang, Hong; Lee, Pooi See
- Abstract
A stretchable electrochromic display with a self‐powered feature is an attractive concept in addressing the demands of information visualization and interaction without an external power supply for next‐generation wearable and portable electronics. Herein, a self‐powered stretchable electrochromic display is proposed for the first time, with WO3 on the stretchable conductor as the electrochromic electrode integrated in parallel with the Zn/carbon electrodes and topped with a ZnCl2‐based organohydrogel. This geometrically designed electrochromic device can be self‐colored by the chemical potential gap between WO3/Zn electrodes. The self‐bleaching process caused by the oxidation of the reduced WO3 electrode is facilitated by the leakage current between the WO3/carbon electrodes. In this constructed self‐powered system, the electrochromic electrode shows reversible coloring/bleaching performance up to 50% strain and maintains favorable stability with power‐free reversible electrochemical switching for 400 cycles. Optical contrast retention at 81% is maintained for 200 stretching/recovery cycles. The prepared device combined with a phosphorescent substrate is demonstrated as a light‐adaptable stretchable display, where the "on/off" states of the display are shown in both bright and dark conditions without power consumption. This work provides broad application prospects for futuristic multifunctional stretchable and portable display electronics.
- Subjects
CARBON electrodes; POWER resources; STRAY currents; CHEMICAL potential; WEARABLE technology; BLEACHING (Chemistry); ELECTROCHROMIC devices
- Publication
Advanced Energy Materials, 2023, Vol 13, Issue 18, p1
- ISSN
1614-6832
- Publication type
Article
- DOI
10.1002/aenm.202204103