Colored electrolytes for electrochromic devices

Recent advances in electrochromic materials and devices for camouflage applications

“…In addition, the direct introduction of colored electrolytes without the function of color change to achieve color tuning in EC devices is a much simpler and more effective method, as reported by Aline Rougier and coauthors. 144 In this work, the authors tuned the color of the electrolyte by mixing four pigments into a gel polymer electrolyte, which resulted in four different colors of the electrolyte (white, yellow, red, and green) (Fig. 13b).…”

Multicolored inorganic electrochromic materials: status, challenge, and prospects

“…17b). 126 An ECD composed of gel electrolyte layers with four different pigments showed great color contrast between their reduced state and oxidation state. This is different from the coloration mechanism of most electrochromic devices, where the color change of the pH indicator caused by external stimuli represents an emerging electrochromic mechanism.…”

Recipe for Fabricating Optimized Solid‐State Electrochromic Devices and Its Know‐How: Challenges and Future

“…[24][25][26] Since ECM is mainly governed by redox reactions, therefore, the basic working principle of an electrochromic device (ECD) includes bias manipulation to achieve optical modulation which may extend beyond the visible range spanning from UV to IR and NIR wavelengths. [27,28] The bias, used for color modulation in the device, drives the electrons toand-fro through the electrochromic layers between the electrodes and with the help of ions present in the electrolyte the overall process accomplishes a visible change in color [29] thus leading to optical switching. By choosing materials effectively, the entire spectral range can be tuned effectively to obtain output colors of interest.…”