Coated article including low-emissivity coating insulating glass unit including coated article, and/or methods of making the same
View Patent ↗Certain example embodiments relate to a coated article including at least one infrared (IR) reflecting layer of a material such as silver or the like in a low-E coating, and methods of making the same. In certain cases, at least one layer of the coating is of or includes nickel and/or titanium (e.g., Ni x Ti y O z ). The provision of a layer including nickel titanium and/or an oxide thereof may permit a layer to be used that has good adhesion to the IR reflecting layer, and reduced absorption of visible light (resulting in a coated article with a higher visible transmission). When a layer including nickel titanium oxide is provided directly over and/or under the IR reflecting layer (e.g., as a barrier layer), this may result in improved chemical and mechanical durability. Thus, visible transmission may be improved if desired, without compromising durability; or, durability may simply be increased.
1. A method of making an insulated glass (IG) unit including a coated article including a coating supported by a glass substrate, the method comprising:
having a coated article comprising:
a first dielectric layer on the substrate;
a first layer comprising Ag over at least the first dielectric layer;
a second dielectric layer over at least the first layer comprising Ag;
a second layer comprising Ag over at least the second dielectric layer;
a first layer comprising Ni and Ti over and contacting the second layer comprising Ag;
a third dielectric layer over at least the first layer comprising Ni and Ti;
a third layer comprising Ag over at least the third dielectric layer;
a second layer comprising Ni and Ti over and contacting the third layer comprising Ag;
a fourth dielectric layer over at least the second layer comprising Ni and Ti; and
wherein each of the first and second layers comprising Ni and Ti has a metal content of from about 10-30% Ni and from about 70-90% Ti;
and making the IG unit via steps comprising:
positioning a second substrate in substantially parallel spaced apart relation to said coated article so as to form a gap therebetween;
coupling said coated article and the second substrate,
wherein the coating of the coated article is provided on surface 2 or surface 3 of the IG unit; and
wherein the IG unit has a LSG of greater than or equal to 2.15.
2. The method of claim 1 , wherein the second substrate and the substrate of the coated article are each about 6 mm thick, and wherein the gap between the coated article and the second substrate is about 12 mm.
3. The method of claim 1 , wherein the coating has a sheet resistance of less than or equal to about 1.2.
4. The method of claim 1 , wherein the coated article has a visible transmission of at least 65%.
5. The method of claim 1 , wherein the first dielectric layer comprises zinc oxide, and wherein the first layer comprising Ag is located on and directly contacting the first dielectric layer.
6. The method of claim 1 , wherein the fourth dielectric layer comprises silicon nitride.
7. The method of claim 1 , wherein at least one of the layers comprising Ni and Ti is from 10-45 angstroms thick.
8. A method of making an insulated glass (IG) unit including a coated article including a coating supported by a glass substrate, the method comprising:
having a coated article comprising:
a first dielectric layer on the substrate;
a first layer comprising Ag over at least the first dielectric layer;
a second dielectric layer over at least the first layer comprising Ag;
a second layer comprising Ag over at least the second dielectric layer;
a first layer comprising Ni and Ti over and contacting the second layer comprising Ag;
a third dielectric layer over at least the first layer comprising Ni and Ti;
a third layer comprising Ag over at least the third dielectric layer;
a second layer comprising Ni and Ti over and contacting the third layer comprising Ag;
a fourth dielectric layer over at least the second layer comprising Ni and Ti; and
wherein each of the first and second layers comprising Ni and Ti has a metal content of from about 1-50% Ni and from about 50-99% Ti;
and making the IG unit via steps comprising:
positioning a second substrate in substantially parallel spaced apart relation to said coated article so as to form a gap therebetween;
coupling said coated article and the second substrate, wherein the coating of the coated article is provided on surface 2 or surface 3 of the IG unit; and
wherein the IG unit has a LSG of greater than or equal to 2.15.