SiC carrier disk for ICP Etching

Within the highly reactive and plasma-intense environment of an ICP etching system, the SiC Carrier Disk designed by Semixlab Semiconductor plays a pivotal role in defining wafer integrity, etch precision, and overall process stability. Far beyond a simple mechanical fixture, it functions as an integrated process interface—balancing thermal, electrical, and plasma-chemical dynamics that directly determine etch uniformity and wafer yield.

At its core, the SiC carrier disk provides a stable and ultra-clean mechanical platform that supports the wafer during plasma exposure. The dimensional precision and planarity of the disk ensure consistent wafer seating, minimizing edge stress and preventing micro-fractures or bowing under ion bombardment. Its superior thermal conductivity and uniform heat distribution allow wafers to maintain precise temperature equilibrium across the entire surface, which is essential for controlling etch rates and achieving nanometer-level pattern fidelity. In high-density plasma conditions, thermal gradients can cause process drift or micro-trenching, and the SiC disk’s uniform heat spreading effectively mitigates these effects.

Chemically, the SiC carrier disk acts as a protective barrier between the plasma and the wafer-handling components of the chamber. The high-purity silicon carbide composition exhibits outstanding resistance to halogen-based chemistries such as Cl₂, BCl₃, SF₆, and CF₄, ensuring minimal sputter contamination and virtually eliminating metallic ion migration—a crucial factor in advanced node manufacturing. This inert behavior reduces the frequency of chamber cleans and extends the lifecycle of both the disk and surrounding tool components, improving uptime and throughput.

From an electrical standpoint, Semixlab’s SiC carrier disk contributes to the controlled formation of the plasma sheath and the stabilization of RF energy coupling. Depending on the chosen material configuration—conductive or semi-insulating SiC—the disk can be engineered to fine-tune local bias distribution, mitigating charge accumulation and preventing wafer-level arcing or micro-discharges that can degrade feature profiles. This precise control over electrical boundary conditions enhances process repeatability and supports advanced plasma uniformity tuning strategies.

Additionally, the disk’s plasma-facing surface is optimized to minimize particle generation and ensure smooth gas flow distribution across the wafer plane. Its geometry is designed through computational flow modeling to eliminate eddies and localized plasma density variations, resulting in consistent ion flux and etch uniformity across the entire wafer batch. The synergy between SiC’s mechanical strength, chemical inertness, and thermal/electrical balance transforms it into a critical enabler of defect-free etching for both silicon and wide-bandgap materials such as SiC and GaN.

In essence, the Semixlab SiC Carrier Disk for ICP Etching operates as a precision-engineered process element that safeguards wafer purity while actively enhancing plasma performance. Its material integrity, structural design, and functional versatility collectively support the stringent demands of next-generation device fabrication, where every nanometer of etch precision and every particle of contamination control define the margin between yield optimization and process deviation.

As a leading Chinese manufacturer and factory of SiC carrier disks for ICP equipping, Semixlab is committed to providing customers with advanced technology and product solutions. We offer comprehensive services throughout the entire process, including pre-sales technical consultation, product prototyping, stringent pre-shipment testing, and complete after-sales support. We welcome your further inquiries at any time.