Solid electrochromic devices

Details Solid electrochromic devices Solid electrochromic devices

1978-10-31

1981-11-03

Gron, Teddy S.

Compositions

Radioactive compositions

Nuclear reactor fuel

252408, G02F 117, G02F 123

Patent

active

042982502

ABSTRACT:
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.

REFERENCES:
patent: 3521941 (1970-07-01), Deb et al.
patent: 3827784 (1974-08-01), Giglia et al.
patent: 3971624 (1976-07-01), Druesch et al.
patent: 3973829 (1976-08-01), Giglia
patent: 3995943 (1976-12-01), Jasinski
patent: 4013343 (1977-03-01), Jaccard et al.
patent: 4106862 (1978-08-01), Bayard
patent: 4110259 (1978-08-01), Sichel
patent: 4198124 (1980-04-01), Cognard
Hamblen, D. P., Research Disclosure, pp. 58-59, (Nov. 1977).
Blanc, J. et al., Physical Review B, vol. 4, No. 10, pp. 3548-3557, (Nov. 15, 1971).

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