Method for inhibiting significant oxidation of a film on a substance during heating
First Claim
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1. A process for making an electrochromic device, comprising the steps of:
- A) providing a glass substrate, including an electrochromic layer thereon;
B) placing a powder on the electrochromic layer, the powder capable of releasing a gas which substantially prevents oxidation of the electrochromic layer upon heating; and
C) heating and bending the glass substrate and associated electrochromic layer;
the powder being effective to substantially prevent oxidation of the electrochromic layer.
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Abstract
The present invention relates to a method for inhibiting significant oxidation of a film on a substrate during heating of the substrate. The method includes providing a metal or metal oxide film on a substrate and providing a material adjacent to the film. The substrate is then heated to a temperature sufficient to cause the substrate to bend and the material adjacent to the film reacts in such a way as to protect the metal or metal oxide film on the substrate from further significantly oxidizing.
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Citations
15 Claims
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1. A process for making an electrochromic device, comprising the steps of:
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A) providing a glass substrate, including an electrochromic layer thereon; B) placing a powder on the electrochromic layer, the powder capable of releasing a gas which substantially prevents oxidation of the electrochromic layer upon heating; and C) heating and bending the glass substrate and associated electrochromic layer; the powder being effective to substantially prevent oxidation of the electrochromic layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A process for making an electrochromic device, comprising the steps of:
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A) providing a glass substrate including a conducting layer selected from the group consisting of doped tin oxide, undoped tin oxide, indium oxide, indium tin oxide, zinc oxide, and mixtures thereof, the glass substrate having thereon an electrochromic layer selected from the group consisting of non-stoichiometric tungsten oxide, molybdenium oxide, copper oxide, nickel oxide, cobalt oxide, and mixtures thereof, the electrochromic layer optionally including a metal film selected from the group consisting of Al, Ag, Cu, Ta, Zr, Mo, Zn, Sn, Ti, Cr, In, W, Mg, Ni, Fe, Si, and mixtures thereof; B) placing a powder selected from the group consisting of carbonyls, carbonates, hydrides, formates, borohydrides, sulfates, sulfites, ammonia compounds, hydrazine compounds, W, Mo, Cu, Ti, Ni, No, Au, Fe, V, and mixtures thereof on the electrochromic layer; C) positioning a second glass substrate including an electrode layer thereon adjacent the powder; and D) heating to a temperature greater than 1000°
F. and bending the glass substrate and associated electrochromic layer;the powder being effective to substantially prevent oxidation of the electrochromic layer. - View Dependent Claims (15)
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Specification