Electrochromic device with oxymethylene-polyoxyethylene electrol

Details Electrochromic device with oxymethylene-polyoxyethylene electrol Electrochromic device with oxymethylene-polyoxyethylene electrol

1990-10-29

1991-12-10

Hille, Rolf

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359265, G02F 101

Patent

active

050712330

ABSTRACT:
An electrochromic cell is provided having a Li.sup.+ doped oxymethylene-polyoxyethylene solid polymer electrolyte. The film of ionically doped oxymethylene-polyoxyethylene is sandwiched between two complementary electrochromic layers, one of which is tungsten oxide. The other electrochromic layer is a polyaniline or a Prussian Blue material. The complementary electrochromic layers are deposited onto electrically conductive transparent substrates, such as fluorine-doped tin oxide coated glass. The electrochromic cell colors and bleaches by the application of an appropriate electrical potential between the two electrochromic films. The Li.sup.+ doped oxymethylene-polyoxyethylene electrolyte is stable at elevated temperatures up to about 100.degree. C.

REFERENCES:
patent: 4304465 (1981-12-01), Diaz
patent: 4750817 (1988-06-01), Sammells
patent: 4874229 (1989-10-01), Ito et al.
patent: 4938571 (1990-07-01), Cogan et al.
patent: 4958917 (1990-09-01), Hashimoto et al.
patent: 4960323 (1990-10-01), Demiryont
patent: 4960324 (1990-10-01), Brown

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