Solid electrochromic devices

Details Solid electrochromic devices Solid electrochromic devices

G - Physics

02

F

345/55

G02F 1/01 (2006.01) G02F 1/15 (2006.01)

Patent

CA 1136746

BOYD-15 15. SOLID ELECTROCHROMIC DEVICES Abstract of the Disclosure Solid state electrochromic devices are fabricated using, as the electrochromic material, ionic conductors such as heteropoly acids. The properties of the ionic conductors permit construction of a device having only two electrodes and the electrochromic material. In operation, low voltages impressed between the electrodes induce a color change. For example, when phosphotungstic acid is employed, the color change is from white to dark blue. Cycle times as low as 100 msec are achievable and the devices exhibit memory properties.

336612

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