Articles including anticondensation coatings and/or methods of making the same
View Patent ↗Certain example embodiments of this invention relate to articles including anticondensation coatings that are exposed to an external environment, and/or methods of making the same. In certain example embodiments, the anticondensation coatings may be survivable in an outside environment. The coatings also may have a sufficiently low sheet resistance and hemispherical emissivity such that the glass surface is more likely to retain heat from the interior area, thereby reducing (and sometimes completely eliminating) the presence condensation thereon. The articles of certain example embodiments may be, for example, skylights, vehicle windows or windshields, IG units, VIG units, refrigerator/freezer doors, and/or the like.
1. A window comprising:
a coating supported by a glass substrate, the coating being exposed to an adjacent external environment, wherein the coating comprises the following layers moving away from the glass substrate:
a transparent layer comprising indium-tin-oxide (ITO) having a physical thickness of from 75-175 nm,
a dielectric layer comprising silicon and nitrogen and being doped with aluminum, and
a dielectric layer comprising oxygen and aluminum, the dielectric layer comprising oxygen and aluminum being located directly on and contacting the dielectric layer comprising silicon and nitrogen,
wherein said layer comprising ITO is located directly under and contacting said dielectric layer comprising silicon and nitrogen,
wherein the layer comprising silicon and nitrogen is thinner than is the layer comprising ITO,
wherein a visible transmission of the coating and the glass substrate is 80% or higher, and
the coating has a sheet resistance of less than 30 ohms/square, and
wherein said dielectric layer comprising oxygen and aluminum is an outermost layer of the coating and is exposed to the external environment.
2. The window of claim 1 , further comprising a dielectric layer located directly between and contacting the glass substrate and the layer comprising ITO.
3. The window of claim 1 , wherein the external environment is the inside of a house or vehicle.
4. The window of claim 1 , wherein the external environment is the outside environment.
5. The window of claim 1 , wherein each of said layers is sputter-deposited.
6. A coated article comprising:
a coating supported by a glass substrate, the coating being exposed to an adjacent external environment, wherein the coating comprises the following layers moving away from the glass substrate:
a transparent layer comprising indium-tin-oxide (ITO) having a physical thickness of from 75-175 nm,
a dielectric layer comprising silicon and nitrogen and being doped with aluminum, and
a dielectric layer comprising oxygen and aluminum, the dielectric layer comprising oxygen and aluminum being located directly on and contacting the dielectric layer comprising silicon and nitrogen,
wherein said layer comprising ITO is located directly under and contacting said dielectric layer comprising silicon and nitrogen,
wherein the layer comprising silicon and nitrogen is thinner than is the layer comprising ITO,
wherein a visible transmission of the coated article is 80% or higher, and
the coating has a sheet resistance of less than 30 ohms/square, and
wherein said dielectric layer comprising oxygen and aluminum is an outermost layer of the coating and is exposed to the external environment.
7. The coated article of claim 6 , further comprising a dielectric layer located directly between and contacting the glass substrate and the layer comprising ITO.
8. The coated article of claim 6 , wherein the external environment is the inside of a house or vehicle.
9. The coated article of claim 6 , wherein the external environment is the outside environment.