Electrochromic thin-film systems and components thereof
First Claim
1. A method of preparing an electrochromic oxide layer, which comprises applying to a substrate a coating solution for the electrochromic layer which is prepared by reacting hydrogen peroxide with tungsten or molybdenum or both, wherein, in said coating solution or a precursor thereof or both, an alkali metal hydroxide is dissolved in an overall quantity of from about 0.001 to 1.0 mol of alkali metal per mole of tungsten or molybdenum or both and thermally after-treating the applied layer to form an electrochromic oxide.
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Abstract
A description is given of electrochromic thin-film systems and their components, especially an improved electrochromic thin-film based on tungsten oxide and/or molybdenum oxide into which alkali metal ions are incorporated, an electrolyte which is improved in particular with respect to its conductivity and is based on pre-hydrolysed, organically modified alkoxysilane and on organic diol (triol), and an improved process for producing a noncolouring ion insertion layer based on cerium oxides and titanium oxides.
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29 Claims
- 1. A method of preparing an electrochromic oxide layer, which comprises applying to a substrate a coating solution for the electrochromic layer which is prepared by reacting hydrogen peroxide with tungsten or molybdenum or both, wherein, in said coating solution or a precursor thereof or both, an alkali metal hydroxide is dissolved in an overall quantity of from about 0.001 to 1.0 mol of alkali metal per mole of tungsten or molybdenum or both and thermally after-treating the applied layer to form an electrochromic oxide.
- 12. An electrolyte obtained by
(a) partial hydrolysis and condensation of at least one silane of the general formula - space="preserve" listing-type="equation">R.sub.n SiX.sub.4-n (I)
in which radicals R, which are identical to or different from one another, are nonhydrolysable groups of which at least one comprises a thermally or photochemically polymerizable or polycondensable group, the radicals X, which are identical or different from one another, are OH or hydrolyzable groups, and n is 1 or 2; (b) reaction of the partially hydrolysed and condensed silane from stage (a) with a diol and/or triol which is liquid at room temperature, optionally in the presence of an initiator; (c) establishing a pH in the range from 4.0 to 8.0 using acid; (d) adding, at any moment after stage (a) and before stage (c), at least one alkali metal salt which is soluble in the system; and (e) thermal or irradiation treatment of the resulting system; wherein at least one silane of the general formula
space="preserve" listing-type="equation">R'"'"'.sub.m SiX.sub.4-m (II)in which R'"'"' is alkyl, alkaryl, aralkyl or aryl, radicals X are identical to or different from one another and are OH or hydrolyzable groups, and m is 0 or 1, is additionally added to the system at any moment after stage (a) and before (c). - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
Specification