Patent ID: 7732013

Claim:
A chemical vapor deposition process for depositing a zinc oxide coating on a moving substrate comprising: (a) forming a first precursor gas stream comprised of a zinc containing compound; (b) forming a second precursor gas stream comprised of water; (c) delivering said first and said second precursor gas streams to a gas mixing chamber a predetermined distance above a surface of a glass substrate to be coated, which glass substrate is outside of the gas mixing chamber and at atmospheric pressure; and (d) mixing together said first precursor gas stream and said second precursor gas stream in the gas mixing chamber to form a precursor mixture and then upon exiting the gas mixing chamber, contacting the surface of the substrate with said precursor mixture as it moves past the gas mixing chamber, the surface being at a temperature sufficient to drive a reaction between said zinc containing compound and said water; wherein said first precursor gas stream and said second precursor gas stream are mixed together in the gas mixing chamber for a time <1 sec. before the precursor mixture contacts the surface of the substrate so that a zinc oxide coating is formed on the surface at a deposition rate of greater than 5 nm/second.