Understanding the Erosion Challenge in Advanced Plasma Etching
Plasma etching equipment depends on precision components to maintain consistent ion distribution around the wafer edge. Within this category, quartz and silicon rings suffer rapid erosion from halogen gas plasma in advanced nodes, a persistent industry pain point that causes frequent edge-to-center etch profile drift. As chip manufacturers push toward tighter process windows, these material limitations translate directly into unplanned maintenance, inconsistent etch uniformity, and elevated particle contamination risk. Addressing this gap requires a material system engineered specifically to withstand aggressive halogen chemistries without sacrificing dimensional stability.
What Is the Solid SiC Focus Ring / CVD SiC Focus Ring?
The Solid SiC Focus Ring / CVD SiC Focus Ring is positioned as a focus ring for plasma etching equipment, developed by VeTek Semiconductor (also known as Veteksemicon / VETEK), the semiconductor materials brand of Wuyi Tianyao New Material Technology Co., Ltd., headquartered in Wuyi City, Jinhua, Zhejiang Province. The product line was created to directly address the erosion and profile-drift issues that limit the service life of conventional quartz and silicon focus rings in halogen plasma environments.
Engineering Behind the Product
Binderless CVD SiC Matrix for Etch Life Extension
The core differentiated value of this component lies in its binderless CVD SiC matrix, which contains no secondary phases at grain edges. This structural characteristic reduces particle shedding and withstands halogen plasma bombardment, directly extending the operational life of the focus ring compared to materials that rely on binder phases susceptible to preferential erosion at grain boundaries.
Plasma Distribution and Etch Profile Precision
Functionally, the ring surrounds the wafer tracking zone to achieve linear plasma distribution and exact edge-to-center etch profiles. This design detail is central to maintaining etch uniformity across the wafer, since any deviation in the plasma sheath near the wafer edge can propagate into profile drift during high-volume production runs.
Chemical Resistance Under Halogen Chemistries
The focus ring is engineered to withstand fluorine and chlorine reactive ion etching, the two chemistry families most commonly associated with rapid degradation of quartz and silicon alternatives. This resistance is a direct response to the target scenario pain point of halogen-induced erosion identified in advanced node processes.
Material Purity and Manufacturing Precision
The Solid SiC Focus Ring / CVD SiC Focus Ring is manufactured within the same technical framework that governs VeTek’s broader CVD SiC product family. Relevant technical metrics include a CVD SiC purity of 99.99995%, with impurity levels below 5ppm and harmful metals below 1ppm. For the solid ceramic form, the material achieves a density of 3.2g/cm³, a growth rate of 0.15mm/h or greater, and a resistivity range of 10⁻² to 10⁴ Ω·cm. Machining is executed with equipment accuracy up to 3μm, within a maximum processing dimension of 1200mm x 1500mm. In terms of delivery, the product is supplied as bulk Solid SiC components thicker than 5mm, machined to tight tolerances, ensuring the ring meets the dimensional demands of high-precision etch chambers.
These specifications are supported by VeTek’s vertically integrated manufacturing capabilities, spanning prefabrication, hot pressing, purification, machining, and chemical vapor deposition, combined with dimensions capability exceeding 700mm. This integration allows for rapid customization and shortened production cycles relative to conventional multi-vendor supply chains. Quality is verified through a dedicated testing infrastructure that includes Glow Discharge Mass Spectrometry (GDMS), Dynamic Secondary Ion Mass Spectrometry (D-SIMS), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), X-ray Diffraction (XRD), scratch testers, and coordinate measuring machines (CMM), providing multi-angle verification of both material purity and dimensional accuracy.
Quality Systems and Certifications
VeTek’s manufacturing operations are certified under ISO 9001:2015 (Quality Management System), ISO 14001:2015 (Environmental Management System), and ISO 45001:2018 (Occupational Health and Safety Management System). The company also holds RoHS, REACH SVHC Screening, and Halogen-Free compliance certifications through SGS, along with CNAS Management System Certification. These credentials establish a documented quality framework behind the manufacturing of components such as the Solid SiC Focus Ring. Underpinning this quality commitment, R&D investment accounts for more than 30% of annual revenue, reflecting a sustained focus on materials innovation.
Compatibility with Global Equipment Platforms
The focus ring is designed within a broader platform strategy that supports systems and components compatible with international equipment platforms, including Applied Materials (AMAT), ASM, Tokyo Electron (TEL), LPE, Aixtron, NuFlare, Veeco, AMEC, Centrotherm, and PVA TePla. This compatibility approach is reinforced by business relationships with equipment and materials companies such as NAURA, AMEC, Sanan Optoelectronics, and GlobalWafers, positioning VeTek within an ecosystem of semiconductor equipment manufacturers, wafer and epitaxial manufacturers, and thermal field system integrators.
Customer Feedback and Market Recognition
Client testimonials collected on VeTek’s products speak to the company’s broader manufacturing reliability. One customer noted, "The supplier offers high quality at a reasonable price, making them a valued business partner." Another observed, "Their attention to detail and commitment to quality is excellent; we received satisfactory goods in a short term." A third remarked, "Every step of the process was smooth. A reliable manufacturer indeed." These comments reflect the operational discipline behind VeTek’s custom machining and CVD coating services, which are also applied to the production of the Solid SiC Focus Ring / CVD SiC Focus Ring.
VeTek has also been recognized as a Zhejiang Province Industrial Chain Collaborative Innovation Integrated Circuit Direction Guide Enterprise, and is a member of the Alliance of IC Materials of Zhejiang Province, situating the company within a recognized regional innovation network for integrated circuit materials.
Why the Solid SiC Focus Ring / CVD SiC Focus Ring Matters
For process engineers managing halogen-based etch chemistries, the combination of a binderless CVD SiC matrix, precise plasma distribution geometry, and high chemical resistance to fluorine and chlorine reactive ion etching addresses the specific erosion and profile-drift challenges that limit conventional quartz and silicon rings. Backed by vertically integrated manufacturing, rigorous material purity verification, and a documented quality certification framework, the Solid SiC Focus Ring / CVD SiC Focus Ring from VeTek Semiconductor, a product of Wuyi Tianyao New Material Technology Co., Ltd., represents a materials-engineering response built specifically around the operational demands of advanced plasma etching equipment.
https://www.veteksemicon.com/
Wuyi Tianyao New Material Technology Co., LTD
