Patent ID: 9478408
Filing Date: 2016-10-25
CPC Classification: C23C,H01J,H01L

Claim Text:
1. A method for operating a substrate processing system comprising: a) processing a substrate arranged on a substrate support in a processing chamber, wherein at least one of precursor gas and/or reactive gas is supplied during the processing; b) removing the substrate from the processing chamber; subsequent to step b): c) selectively supplying carrier gas and purge gas to the processing chamber; d) generating RF plasma in the processing chamber during N cycles, where N is an integer greater than one, wherein the N cycles include alternating first and second periods, and wherein the RF plasma is on for the first period and off for the second period during each of the N cycles; and e) supplying the purge gas during at least part of each of the N cycles of the RF plasma such that (i) the purge gas is not supplied during the first period when the RF plasma is on and (ii) the purge gas is supplied during the second period when the RF plasma is off.