Patent ID: 11868147
Assignee: APPLIED MATERIALS, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. A system comprising:
one or more processors; and
one or more memory devices comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
receiving, from an Optical Emission Spectrometer (OES), a measurement that is indicative of an amount of a gas species in a Physical Vapor Deposition (PVD) chamber while performing a current process on a semiconductor substrate in the PVD chamber;
providing the measurement as a feedback input to a control process that is configured to maintain a predetermined target amount of the gas species in the PVD chamber, wherein the predetermined target amount of the gas species in the PVD chamber corresponds to a transition region that deposits a sub-stoichiometric film on the semiconductor substrate, and the transition region falls between a metallic deposition mode and a compound deposition mode;
generating a setpoint from the control process for a gas flow controller that controls an amount of the gas species that flows into the PVD chamber while performing the current process on the semiconductor substrate; and
causing the gas flow controller to provide the gas species to the PVD chamber using the setpoint from the control process.