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 coated article, for use in a window, comprising:
a coating supported by a glass substrate, wherein:
the coating comprises the following thin-film layers moving away from the glass substrate:
a dielectric layer comprising silicon and nitrogen;
a transparent conductive layer comprising indium tin oxide (ITO) having a physical thickness of from 75-175 nm,
a silicon-inclusive contact layer comprising silicon and nitrogen located over and directly contacting the transparent conductive layer comprising indium tin oxide (ITO),
a protective layer comprising oxygen and aluminum, the protective layer comprising oxygen and aluminum being located over and directly contacting the silicon-inclusive contact layer comprising silicon and nitrogen;
wherein the protective layer comprising oxygen and aluminum is the outermost layer of the coating and is to be exposed to an external environment adjacent the window;
wherein the coating is disposed on an exterior surface of the glass substrate such that the coating is to be exposed to an external environment, and
wherein the coating has a hemispherical emissivity of less than 0.23 and a sheet resistance of less than 30 ohms/square.
2. The coated article of claim 1 , wherein the coated article has a visible transmission of at least 70%.
3. The coated article of claim 1 , wherein the coated article has a visible transmission of at least 80%.
4. The coated article of claim 1 , wherein the transparent conductive layer comprising indium tin oxide (ITO) is located over and directly contacting the dielectric layer comprising silicon and nitrogen.
5. The coated article of claim 1 , wherein the coating further comprises another dielectric layer located between the glass substrate and the dielectric layer comprising silicon and nitrogen.
6. The coated article of claim 1 , wherein the transparent conductive layer consists essentially of ITO.
7. A window including the coated article of claim 1 , wherein the coating is on a surface of the window exposed to the external environment.