TCO Coating and Coated Substrate for High Temperature Applications

A heat treated glass substrate having a major surface on which there is a coating, the coating comprising in sequence outward from substrate:

• a first transparent dielectric film comprising tin oxide;
• a second transparent dielectric film comprising silicon dioxide;
• a transparent conductive oxide film comprising zinc aluminum oxide;
• and
• a third transparent dielectric film comprising tin oxide or titanium oxide, the third transparent dielectric film having a thickness ranging from about from about 400 to about 1500 Å;
• and wherein the coating has a sheet resistance of less than about 10 Ω/square and an absorption of 7% or less

A glass substrate having a major surface bearing thereover a coating comprising, in sequence outward from the substrate:

• a first transparent dielectric film comprising a dielectric material having an index of refraction higher than the index of refraction of glass;
• a second transparent dielectric film comprising silicon dioxide;
• a transparent conductive oxide film comprising aluminum-doped zinc oxide;
• and
• a third transparent dielectric film comprising tin oxide and having a thickness ranging from about 1000 to about 1500 Å.