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Fabry-Perot cavity colorful reflective electrochromic device based on metal and tungsten trioxide

Photonics and Nanostructures - Fundamentals and Applications, ISSN: 1569-4410, Vol: 63, Page: 101352
2025
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Article Description

The realization of colorful effects based on inorganic electrochromic materials has always been a focus of research in the field of electrochromism. In recent years, colorful electrochromic devices based on Fabry-Perot cavity have received a lot of attention. This article uses three metals (chromium, copper and tungsten) and tungsten trioxide to form Fabry-Perot cavity, and tests these electrochromic devices (ECDs). The results show that Fabry-Perot cavity electrochromic devices based on these three metals can achieve colorful effects, among which ECD using tungsten as reflector has the best performance, with an optical modulation range of reflectivity of 27.67 %. The CIE color coordinates change from (0.235, 0.300) to (0.241, 0.181), and the response times for coloring and bleaching are 4.0 s and 6.1 s, respectively. ECD using chromium as reflector is similar to ECD using tungsten as reflector in reflectance spectra, ECD using copper as reflector has a fast response speed but performs poorly in terms of cycle life. By comparing the differences in device performance caused by three types of metal reflective layers, we believe that metals with strong reflection, good conductivity, and chemical stability can perform better in such electrochromic device.

Bibliographic Details

Chenxiao Guo; Muyun Li; Honglong Ning; Guoping Su; Zhihao Liang; Bocheng Jiang; Yuxiang Liu; Shitao Xu; Rihui Yao; Junbiao Peng

Elsevier BV

Materials Science; Physics and Astronomy; Computer Science; Engineering

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