Patent ID: 8501266
Filing Date: 2013-08-06
Classification: C23C,C30B

Abstract:
1. A method of depositing a film on a substrate, comprising: (a) providing an evaporation vessel comprising a chamber containing a precursor compound to be vaporized, the evaporation vessel having a gas inlet and a gas outlet, a carrier gas feed line in fluid communication with the gas inlet, a gas control valve in the gas feed line, and a gas exit line in fluid communication between the gas outlet and a plurality of vapor deposition reactors, the gas exit line having a pressure transducer and a concentration transducer, each of the gas control valve, pressure transducer and concentration transducer in electrical connection with a controller; (b) conveying a gaseous mixture comprising vaporized precursor compound and a carrier gas to the plurality of vapor deposition reactors; (c) maintaining a substantially constant concentration of the precursor compound in the gaseous mixture by the steps selected from the group consisting of: (d) subjecting the gaseous mixture to conditions in the plurality of deposition reactors sufficient to deposit a film.