期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 40, 页码 44874-44882出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c14420
关键词
dynamic windows; reversible metal electrodeposition; electrochromism; cobalt hexacyanoferrate; bismuth electrodeposition; copper electrodeposition
资金
- Research and Innovation at the University of Nevada, Reno (UNR)
Dynamic windows, which electronically switch between clear and dark states on demand, save energy in buildings and automobiles by minimizing the lighting, heating, and cooling costs. In this study, we design dynamic windows by combining reversible metal electrodeposition (RME) and electrochromism, two promising approaches for optoelectronics. These hybrid dynamic windows tint on both electrodes. Reversible Bi and Cu electrodeposition is elicited on the working electrode, while an electrochromic cobalt hexacyanoferrate thin film darkens on the counter electrode. By facilitating plane parallel ion diffusion and dual tinting, this architecture enables dynamic windows to switch more rapidly than devices based on traditional RME schemes. We demonstrate that 25 cm(2) devices switch with 58% optical contrast between a transparent and a color-neutral dark state in 20 s. Moreover, these hybrid dynamic windows switch 1000 times without significant degradation in optical performance.
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