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Microwave-Assisted Processing for Advanced Semiconductor Nodes

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Microwave-Assisted Processing for Advanced Semiconductor Nodes MKS logo Products MKS Newport Ophir Spectra-Physics Atotech ESI Capacitance Manometers Compact Pressure Transducers General Purpose Pressure Transducers High Performance Pressure Transducers Industrial Pressure Transducers Reference Pressure Transducers View All Capacitance Manometers Mass Flow Controllers & Meters Mass Flow Controllers Mass Flow Meters In Situ Flow Verifiers Flow Ratio Controllers Mass Flow Controller Accessories Vacuum Gauges Vacuum Pressure Transducers Vacuum Pressure Sensors Vacuum Gauge Controllers Vacuum Gauge Accessories Vacuum Gauge Calibration Legacy Vacuum Gauges Gas Analyzers Mass Spectrometers Tunable Filter Spectrometers FTIR Gas Analyzers NDIR Gas Analyzers Vacuum Flanges & Fittings ISO-KF Flanges & Fittings ISO-MF Flanges & Fittings CF Flanges & Fittings Butt Weld Flanges & Fittings Custom Vacuum Fabrication RF & Microwave Generators Microwave Generators RF Power Generators Pressure Controllers & Valves Pressure Controllers Vacuum Isolation Valves Downstream Exhaust Throttle Valves Upstream Flow Control Valves Gate Valves Plasma & Reactive Gas Solutions Remote Plasma Sources Ozone Generators & Systems Dissolved Gas Foreline Plasma Clean Systems Automation, Control & Sensing Heater Jackets & Traps Special Offers Virtual Booth Solutions Semiconductor Electronics and Packaging Specialty Industrial Support Global Service MKS Service Solutions RMA Request Form Health & Safety Forms Contact Global Service Technical Support Product Technical Support Training Programs Contact Product Technical Support Technical Resources Literature Manuals Technical Papers Application Notes Standards Compliance View All Technical Resources Contact MKS Company About MKS Guiding Principles Executives & Fellows Solutions & Innovations Legal Information Environmental, Social and Governance Investor Relations Corporate Governance Stock Information News Releases Events & Presentations Annual Meeting Materials SEC Filings and Forms Financial Analysts All Investor Relations News & Media Trade Shows & Events Press Releases Media Library Careers Job Openings We're Hiring! About MKS MKS Benefits Message from CEO Business Units & Products MY INNOVATION Stories Contact Contact Us Online Corporate Offices Sales & Application Support Calibration, Service & Repairs Product Technical Support Sign In Compare products Product Comparison 

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As device scaling approaches sub-2nm, conventional thermal budgets and process controls face severe constraints. Microwave-assisted processing (MAP) is emerging as a critical technology, offering a disruptive path forward for advanced semiconductor manufacturing.

Key Technical Advantages Volumetric Heating: Unlike surface-limited conduction, microwaves interact directly with dipolar species and free carriers. This enables uniform energy deposition deep within the wafer bulk, ensuring consistent and reliable processing. Selective Absorption: Materials with high dielectric loss, such as doped silicon and IGZO, absorb microwave energy preferentially. This allows for selective heating, which dramatically reduces thermal stress on sensitive materials like low-k dielectrics and polymer substrates. Rapid Thermal Cycles: MAP achieves dopant activation in under 60 seconds and at temperatures lower than traditional rapid thermal processing (RTP). This minimizes dopant diffusion and junction smearing, which is critical for forming ultra-shallow junctions. Critical Applications at Advanced Nodes Dopant Activation Beyond Solubility Limits: MAP enables high phosphorus activation in silicon without extended diffusion, a key requirement for ultra-shallow junctions. Silicide Formation: Localized heating allows for precise phase transformation (e.g., NiSi → NiSi₂) with minimal agglomeration, preserving material integrity. Oxide Semiconductor TFTs: MAP facilitates low-temperature crystallization of IGZO, enabling the fabrication of flexible and transparent electronics. Microwave Plasma Cleaning: Provides effective wafer conditioning with significantly reduced ion bombardment damage, preserving delicate structures. Navigating Integration Challenges Successful MAP implementation requires addressing specific challenges to ensure high-volume manufacturing:

Process Uniformity: Managing standing wave patterns in multimode cavities requires advanced impedance matching algorithms to ensure consistent heating across the entire wafer. Metrology: Implementing real-time dielectric loss monitoring and temperature mapping is crucial for closed-loop control and process repeatability. Tool Design: Creating integrated systems that combine microwave applicators with conventional heaters and thermal management is necessary for precise thermal gradient management. Why MKS Excels in Microwave Processing MKS provides the unique domain expertise and integrated solutions necessary to overcome the toughest MAP challenges.

Precision Power Delivery: Our industry-leading microwave generators ensure a uniform field distribution across the wafer, which is fundamental to process consistency. Advanced Integration: Proprietary, real-time feedback systems enable closed-loop control of dielectric loss and temperature, ensuring reliable and repeatable processing. Process + Equipment Synergy: MKS combines microwave applicators with thermal management and plasma technologies, delivering integrated systems optimized for demanding BEOL and 3D IC flows. Global Ecosystem & Support: A proven track record in semiconductor fabs worldwide ensures scalability, reliability, and support for high-volume manufacturing. Future Outlook MAP-enabled modules are set to become standard in back-end-of-line (BEOL) and 3D integration flows, particularly for applications requiring:

Monolithic 3D ICs: Critical for processes where thermal budgets below 400 °C are mandatory. Advanced Packaging: Ideal for processes involving polymer substrates and heterogeneous stacks. Energy-Efficient Fabs: Leveraging MAP’s low power consumption and rapid thermal cycles to optimize overall fab efficiency. Learn More: Microwave technology is a paradigm shift for advanced semiconductor manufacturing, and MKS is ready to lead the way.

MKS offers compact industrial microwave generators and systems in 915MHz and 2450MHz that are adaptable to a wide range of applications. See our Microwave Generators and Systems here Contact an MKS Applications Specialist to discuss how MKS Microwave Systems can improve your process.

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