Patent ID: 7939450

Claim:
A method of processing a substrate comprising: performing a first S-O sequence using a first etching subsystem, a first Chemical Oxide Removal (COR) subsystem, a first transfer subsystem, and a first evaluation subsystem wherein a first oxygen-containing spacer layer is produced on a plurality of gate structures and on one or more evaluation features on a first set of substrates; obtaining first evaluation data for a first evaluation substrate using the first evaluation subsystem, the first evaluation data including Integrated Metrology (IM) data for a first evaluation feature associated with a first gate structure, the first evaluation feature having the first oxygen-containing spacer layer thereon; identifying the first set of substrates as first verified substrates when the first evaluation data is less than or equal to first threshold data; and identifying the first set of substrates as first un-verified substrates and performing a first corrective action, when the first evaluation data is greater than the first threshold data.