Patent ID: 8815059
Filing Date: 2014-08-26
Classification: C03C,F27B,H05B

Abstract:
1. A method of making a coated article, the method comprising: providing a glass substrate; forming a layer comprising indium tin oxide on the substrate via physical vapor deposition, wherein the layer comprising indium tin oxide is located between and directly contacting a first layer comprising silicon nitride and a second layer comprising silicon nitride; exposing the glass substrate with the layer comprising indium tin oxide thereon to near infrared radiation at a peak emission of 1-2 μm for up to about 108 seconds so as to cause the sheet resistance, emissivity, and absorption to be lower than corresponding values for the layer comprising indium tin oxide as-deposited; wherein the layer of indium tin oxide is preferentially heated such that the glass substrate does not reach a temperature in excess of about 480 degrees C., wherein said preferential heating is due to the layer comprising indium tin oxide being more absorbent to the peak emission than the glass substrate; and wherein the first layer comprising silicon nitride further comprises oxygen, and wherein the first and second layers comprising silicon nitride are formed prior to the exposure to the near infrared radiation at a peak emission of 1-2 μm.