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AssigneeAGP America S.A.
InventorsAlexey KRASNOV, Andris SIVARS
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As the cost of energy has increased, the use of solar coatings on automotive and architectural glazing has enjoyed massive growth. Most solar coatings have metallic silver layers that are highly reflective in the infrared. The silver is deposited over a “wetting” layer which must have a certain level of roughness to prevent agglomeration of the silver and to ensure good adhesion. However, a very smooth wetting layer is beneficial in minimizing haze and improving solar performance. These competing factors make it difficult to deposit a silver layer that promotes both high stability and good adhesion as well as excellent optical and solar properties. The disclosure uses an AgAl/Ag bilayer, which transitions in the composition from silver-aluminum to silver. The bilayer has excellent stability and does not require a rough substrate, thus enabling the use of a smooth high-aluminum-content ZnAlOx wetting layer in providing a coating with superior stability, adhesion, optical, and solar characteristics.
A solar-control coating, comprising:
The solar-control coating of any of the preceding claims, wherein the bilayer is the first metal layer of the coating stack when counting from the substrate on which it is deposited.
The solar-control coating of any of the preceding claims, wherein the bilayer is at least partially comprised of aluminum oxide.
The solar-control coating of any one of the preceding claims, wherein said at least one dielectric layer is comprised of TiOx.
The solar-control coating of any one of the preceding claims, further comprising a wetting layer deposited between the bottom segment of the coating stack and the bilayer.
The solar-control coating of any one of the preceding claims, further comprising at least one metallic silver layer.
The solar-control coating of any one of the preceding claims, wherein such coating is deposited over a glass layer.
Dependencies are inferred from the claim text.