Patent ID: 9735069
Date: 2017-08-15
CPC Classifications: H01J,H01L

Claim:
1. A method for dry processing a substrate in a processing chamber, comprising: creating a plurality of concentration models related to processing rate and processing uniformity; placing the substrate in the processing chamber; dry processing the substrate, wherein the dry processing creates at least one gas byproduct; measuring a concentration of the at least one gas byproduct; fitting the measured concentration of the at least one gas byproduct over time to at least one of the plurality of concentration models; using the concentration of the at least one gas byproduct to determine processing rate of the substrate; creating process parameters from the fitted at least one of the plurality of concentration models and the measured concentration of the at least one gas byproduct; using the created process parameters to determine run-to-run and chamber-to-chamber performance; and using the concentration of the at least one gas byproduct to determine processing uniformity.