Infrared Reflective Tin Oxide Coatings and Methods of Making and Using the Same
AssigneeGemtron Corporation
InventorsAdam O'Ryan, Fangtong Xie, Karson Kimsey, Stephanie Mangold
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Abstract
An oven door glazing is formed of a SnO2 coating doped with Sb and useful for coating substrates to provide reduced transmission of infrared radiation through the coated substrate over a broad range of infrared wavelengths.
Claims47
An oven door glazing, comprising a SnO2 coating doped with Sb formed on the substrate, wherein an average transmission of infrared wavelengths over a range of 800 nm to 1500 nm is less than 55%.
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An oven door glazing having a darkening effect, comprising a SnO2 coating doped with Sb formed on the substrate, wherein a ratio of an atomic percent Sb to an atomic percent of Sn is 0.02 to 0.20, the coating has transmission of light having wavelengths in the visible spectrum of less than 80% while maintaining a transmission of infrared wavelengths in a range of 800 nm to 1500 nm of less than 55%.
An oven door glazing comprising at least a first coating layer disposed on the substrate and a second coating layer disposed on the first coating layer, wherein the first and second coating layers each comprise SnO2 doped with one or more of Sb, P, and Ba, the first and second coating layers different in one or more of dopant concentration, dopant selection, and thickness, and at least one of the first or second coating layer comprises Sb as a dopant.
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A method of forming an inorganic infrared reflective oven door glazing, comprising:
- spray coating a substrate with a coating solution comprising an inorganic Sn precursor and an Sb doping precursor while heating the substrate to thereby form the oven door glazing comprising SnO2 doped with Sb;
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- comprising coating a substrate with a coating solution comprising an Sn precursor and an Sb doping precursor, and heating the substrate to thereby form the inorganic oven door glazing comprising SnO2 doped with Sb, wherein a ratio of an atomic percent of Sb to an atomic percent of Sn of 0.005 to 0.20.
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A method of forming an infrared reflective oven door glazing with a darkening effect, comprising:
- spray coating a coating solution comprising a Sn precursor and Sb dopant precursor onto a glass substrate while heating the substrate to a temperature of less than 500° C. to form the oven door glazing comprising Sn doped with Sb, wherein the oven door glazing has a dopant concentration such that a ratio of an atomic percent of Sb to an atomic percent of Sn is at least about 0.08.
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Dependencies are inferred from the claim text.