Quantum cascade laser cavity ring-down spectroscopy analyzers for PPT-level CO and CO2 detection

As AMCs originate from a wide variety of sources – including process chemicals, refrigerants, cleaning solvents, construction materials, and personnel - it is critical that any monitoring solution is capable of detecting a robust variety of AMCs. Technologies such as GC, IC, and CRDS are currently limited to a subset of AMC at detection limits which are no longer suitable for the ever-shrinking technology nodes produced in modern FABs because they are unable to provide fast measurements, guarantee a comprehensive monitoring of the AMCs including unknowns, and/or are not sensitive enough to trace contaminants at relevant levels. In this work, the Vocus ABC monitor is presented as a recent technological solution that enables custom lists of compounds to be monitored with a sensitivity that reaches single digit parts-per-trillion volume concentration.

This provides greater visibility to the material manufacturing process, which complements a risk-based approach to material disposition and facilitates timely response to inline material signals. Gases have not historically resulted in the same level of fab process impact at legacy nodes; however, excursion impact of raw materials has increased exponentially at smaller and smaller nodes. More frequently, gas excursions have resulted from isolated process, raw material, and cylinder-level abnormalities not characterized on the COA. This impact has driven the need for a similar COA expansion approach within high purity gases, for quality assurance. In preparation for EUV nodes, the overall gap in analytical capability, characterization, and control between the Asian and US markets, further drives the need for this supply chain visibility. Therefore, investment and innovation in US high purity gas supply chains will be critical to achieving yield ramp in EUV nodes.

This presentation was given as part of the Ultrapure Micro 2021 annual conference. It was given as part of the airborne molecular contamination (AMC) and high purity gases control strand.

This presentation was given as part of the Ultrapure Micro 2021 annual conference. It was given as part of the combined track, which contained presentations on airborne molecular contamination (AMC) and high purity gases, and ultra high purity chemicals.

This presentation was given as part of the Ultrapure Micro 2021 annual conference. It was given as part of the airborne molecular contamination (AMC) and high purity gases control strand.

This Q&A session took place at the 2020 Ultrapure Micro annual conference. It was a part of the AMC, Liquid Chemicals & Gases Control track, and included speakers from the Airborne Molecular Contamination (AMC) and High Purity Gases Control session.

This presentation was given at the Ultrapure Micro 2020 annual conference. It was presented in the AMC, Liquid Chemicals & Gases Control track, as part of the Airborne Molecular Contamination (AMC) and High Purity Gases Control session.

This presentation was given at the Ultrapure Micro 2020 annual conference. It was presented in the AMC, Liquid Chemicals & Gases Control track, as part of the Airborne Molecular Contamination (AMC) and High Purity Gases Control session.

This presentation was given at the Ultrapure Micro 2019 annual conference. It was presented in the Ultra High Performance Chemicals and High Purity Gases track, as part of the High Purity Gases & Precursors session.

This presentation was given at the Ultrapure Micro 2019 annual conference. It was presented in the Ultra High Performance Chemicals and High Purity Gases track, as part of the High Purity Gases & Precursors session.