Low emissivity coating with low solar heat gain coefficient, enhanced chemical and mechanical properties and method of making the same
First Claim
1. A method of making a low-emissivity coating having a low solar heat gain coefficient (SHGC), said method comprising depositing on a substrate the coating comprising:
- a first dielectric layer;
a first nucleation layer;
a first Ag layer;
a first absorbing barrier layer;
a second dielectric layer;
a second nucleation layer;
a second Ag layer;
a second absorbing barrier layer;
a third dielectric layer; and
optionally, a topcoat layer;
wherein the coating does not contain a separate absorbing layer; and
further wherein at least one of the first and the second absorbing barrier layers is not fully oxidized, wherein the oxidation state of the absorbing barrier layer that is not fully oxidized is based on sputtering the layer using a ratio of oxygen flow to sputtering power (in kilowatts) that is from 7.5;
1 to 8.0;
1.
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Accused Products
Abstract
The invention provides low-emissivity stacks being characterized by a low solar heat gain coefficient (SHGC), enhanced aesthetics, mechanical and chemical durability, and a tolerance for tempering or heat strengthening. The invention moreover provides low-emissivity coatings comprising, in order outward from the substrate a first dielectric layer; a first nucleation layer; a first Ag layer; a first barrier layer; a second dielectric layer; a second nucleation layer; a second Ag layer; a second barrier layer; a third dielectric layer; and optionally, a topcoat layer, and methods for depositing such coatings on substrates.
298 Citations
37 Claims
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1. A method of making a low-emissivity coating having a low solar heat gain coefficient (SHGC), said method comprising depositing on a substrate the coating comprising:
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a first dielectric layer; a first nucleation layer; a first Ag layer; a first absorbing barrier layer; a second dielectric layer; a second nucleation layer; a second Ag layer; a second absorbing barrier layer; a third dielectric layer; and optionally, a topcoat layer; wherein the coating does not contain a separate absorbing layer; and further wherein at least one of the first and the second absorbing barrier layers is not fully oxidized, wherein the oxidation state of the absorbing barrier layer that is not fully oxidized is based on sputtering the layer using a ratio of oxygen flow to sputtering power (in kilowatts) that is from 7.5;
1 to 8.0;
1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification