Coated article having zinc oxide seed layer with reduced stress under functional layer and method of making the same
AssigneeGuardian Industries Corp.
InventorsAlexey Krasnov, Richard Blacker
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Abstract
A coated article is provided with at least one functional layer, such as an infrared (IR) reflecting layer of or including silver and/or gold. A dielectric and substantially transparent seed layer is provided under and directly contacting the functional layer. In certain example embodiments, the seed layer includes an oxide of zinc and gallium for lowering the stress of the layer and thus improving durability of the overall coating.
Claims22
A coated article including a coating supported by a glass substrate, the coating comprising at least the following layers moving away from the glass substrate:
- a dielectric layer comprising zinc and gallium;
- an infrared (IR) reflecting layer comprising silver and/or gold located on the substrate over and directly contacting the layer comprising zinc and gallium,
- a dielectric layer on the substrate over at least the layer comprising zinc and gallium and the IR reflecting layer;
- and
- wherein the layer comprising zinc and gallium includes from about 0.01 to 10% gallium.
A coated article including a coating supported by a substrate, the coating comprising at least the following layers, moving away from the substrate:
- a substantially transparent dielectric seed layer comprising a first material and a second material, wherein a difference between an ionic radius of the first material and an ionic radius of the second material differs by no more than about 15 pm;
- a layer comprising silver located on the substrate over and directly contacting the seed layer,
- at least one dielectric layer over at least the layer comprising silver;
- wherein the first material is a metal, and the second material is used to dope an oxide of the first material in the seed layer;
- and
- wherein the seed layer includes from about 0.01 to 10%, more preferably from about 0.25 to 10%, of the second material.
A sputtering target for sputter depositing a layer comprising gallium-doped zinc oxide, wherein the target comprises zinc and from about 0.25 to 10% gallium.
Dependencies are inferred from the claim text.