AI Article Synopsis
- Dynamic windows can electronically change from clear to dark, reducing energy costs for lighting, heating, and cooling in buildings and vehicles.
- This study combines reversible metal electrodeposition and electrochromism to create advanced dynamic windows that can tint on both electrodes, improving efficiency.
- The new design allows for rapid switching (58% optical contrast within 20 seconds) and durability (1000 switches without losing performance), outperforming traditional methods.
Article Abstract
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 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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| http://dx.doi.org/10.1021/acsami.0c14420 | DOI Listing |
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