Coated article with low-E coating including tin oxide interlayer

A coated article including a coating supported by a glass substrate, the coating comprising from the glass substrate outwardly:

• at least a first IR reflecting layer comprising silver;
• said IR reflecting layer being provided directly on and contacting a layer comprising zinc oxide,
• wherein said layer comprising zinc oxide is located directly on and contacting a layer comprising tin oxide;
• and
• wherein the coated article is capable of being heat treated for 18 minutes at a furnace temperature of about 650 degrees C. without realizing a visible transmission decrease of more than 1% from the 8 minute mark to the 18 minute mark of such heat treatment, measured monolithically.

A coated article including:

• a coating supported by a glass substrate, wherein the coating comprises first and second IR reflecting layers comprising silver which are spaced apart from one another by at least one layer comprising tin oxide, and
• wherein the coated article is capable of being heat treated at a furnace temperature of about 650 degrees C. for 12 minutes, and realizing at least one of the following due to such heat treatment:
• (a) a visible transmission that does not decrease between the 8 and 12 minute marks of such heat treatment;
• (b) a transmissive b* value which does not change by more than 0.5 from the 8 minute mark to the 12 minute mark of such heat treatment;
• and (c) a sheet resistance in units of ohms/square which does not increase from the 8 minute mark to the 12 minute mark of such heat treatment.