Articles including anticondensation and/or low-E coatings and/or methods of making the same
View Patent ↗Certain example embodiments of this invention relate to articles including anticondensation and/or low-E coatings that are exposed to an external environment, and/or methods of making the same. In certain example embodiments, the anticondensation and/or low-E 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 comprising the following thin-film layers moving away from the glass substrate:
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 nitride 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 nitride;
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; 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 layer comprising oxygen and aluminum comprises aluminum oxynitride.
3. The coated article of claim 1 , wherein the layer comprising oxygen and aluminum consists essentially of aluminum oxide.
4. An IG window unit including the coated article of claim 1 .
5. The coated article of claim 1 , wherein the coating further comprises a layer comprising silicon nitride between at least the glass substrate and the layer comprising ITO.
6. The coated article of claim 1 , wherein the coating further comprises a layer comprising silicon oxynitride between at least the glass substrate and the layer comprising ITO.
7. The coated article of claim 1 , wherein the silicon-inclusive contact layer comprising silicon nitride has a physical thickness of from 10-50 nm.