Airborne Molecular Contaminants (AMCs) such as hydrogen fluoride (HF), hydrogen chloride (HCl), and ammonia (NH₃) can threaten semiconductor processes, sensitive equipment, and manufacturing yield—even at extremely low concentrations. Process Insights TIGER OPTICS™ Cavity Ring-Down Spectroscopy (CRDS) analyzers provide continuous, real-time AMC monitoring at parts-per-trillion (ppt) levels, helping semiconductor manufacturers detect contamination quickly, locate potential sources, protect critical environments, and respond before contamination impacts production
What is Cavity Ring Down Spectroscopy?
Technical Specifications of Tiger Optics CRDS
Cavity Ring-Down Spectroscopy: Principles, Applications, and Benefits
What Are Airborne Molecular Contaminants?
Airborne Molecular Contaminants (AMCs) are gas-phase chemical contaminants present in cleanroom and manufacturing environments that can interact with sensitive materials, surfaces, and semiconductor devices.
Unlike particles, molecular contaminants are extremely small and may pass through conventional particle-control systems. AMCs can include acids, bases, organic compounds, and other reactive molecular species.
In semiconductor manufacturing, these contaminants can contribute to chemical contamination that may cause oxidation, unintended doping, dislocations, defects, and other process problems.
Why Is AMC Monitoring Critical in Semiconductor Manufacturing?
Advanced semiconductor devices are increasingly sensitive to contamination at the molecular level.
Contaminants may originate from process chemicals, manufacturing equipment, personnel, materials, wafer handling, storage and transport systems. Unlike particle contamination, some AMCs can also originate inside the cleanroom itself.
Continuous AMC monitoring helps semiconductor manufacturers:
- Detect molecular contamination earlier
- Identify potential contamination sources
- Protect wafers and sensitive surfaces
- Maintain cleanroom integrity
- Protect reticles and lithography environments
- Monitor FOUPs and wafer-handling systems
- Reduce contamination-related yield risk
- Troubleshoot process excursions
- Protect high-value manufacturing equipment
- Improve contamination-control strategies
SALES | TRAINING INQUIRIES
AMERICAS: info.americas@process-insights.com
EMEAI (includes India): info.emeai@process-insights.com
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CHINA: info.cn@process-insights.com
How are airborne molecular contaminants measured?
AMCs can be measured using highly sensitive analytical technologies such as Cavity Ring-Down Spectroscopy (CRDS). TIGER OPTICS CRDS analyzers use laser absorption to continuously measure specific molecular contaminants at extremely low concentrations.
Why is AMC monitoring important in semiconductor manufacturing?
Molecular contaminants can react with semiconductor materials and surfaces and contribute to oxidation, unintended doping, defects, and other process problems. Continuous monitoring helps fabs identify contamination earlier and investigate potential sources.
Where should AMC monitors be installed?
Monitoring locations depend on the process and contamination risk. Common locations include cleanrooms, process tools, FOUP environments, wafer carriers, reticle storage areas, cleanroom bays, and sub-fab environments.
Can HF, HCl and NH₃ be monitored simultaneously?
Yes. The T-I MAX X3 AMC Monitoring Solution is designed to simultaneously monitor HF, HCl, and NH₃ in real time for semiconductor contamination-control applications.
Can AMC monitoring be mobile?
Yes. The GO-cart™ provides mobile AMC monitoring and can be moved between critical measurement points for fab surveys, troubleshooting, and contamination-source investigation.
Tiger Optics UHP gas analyzers WITH crds tECHNOLOGY
CQC / IQC Cabinet Total Monitoring Solution
VeraSpec™ APIMS
GO-cart™ for AMC Monitoring
GO-cart™ for Analytical Monitoring
HALO Max QCL™ CO2
HALO Max QCL™ CO
HALO KA™ H2O
HALO KA Max™ CH4
HALO KA Max™ H2O
HALO KA Max™ NH3
T-I Max EtO™
HALO™ 3 CH2O
HALO™ 3 CO
HALO™ 3 CO2
HALO™ 3 D2O/HDO
HALO™ 3 H2O
HALO™ 3 CH4
HALO™ 3 HCl
HALO™ 3 NH3
HALO 3 HF
HALO™ H2
HALO™ H2O in N2O
HALO™ OK/OK+
HALO™ LP H2O
HALO™ RP
HALO™ QRP
Spark™ H2O
Spark™ H2O in CO2
Spark™ CH4
Spark™ C2H2
Spark™ CO2
Spark+™ CO
Spark Max™ CO2
Prismatic 3™
Prismatic 3+™
T-I MAX™ AIR GHG
T-I MAX X3
T-I MAX™ HCl
T-I MAX™ HF
T-I MAX™ NH3
T-I MAX™ CEM
CO-REKT™
ALOHA+H2O™
