8 inch Graphite Disk for SiC Epitaxy

The 8-inch Graphite Disk for SiC Epitaxy is designed to provide stable, repeatable support for silicon carbide epitaxial growth on large-diameter wafers. As silicon carbide epitaxy processes transition from 6-inch to 8-inch production, thermal field uniformity and structural stability of wafer support become increasingly critical. This graphite disk is a vital component of the reactor thermal management system, delivering a controlled and uniform thermal environment that directly impacts epitaxial layer thickness uniformity, dopant distribution, and overall process repeatability.

Manufactured from high-purity isostatic graphite, this material was selected for its exceptional thermal conductivity, isotropic physical properties, and low impurity content. The isostatic structure ensures consistent density and thermal response across the entire 8-inch diameter range, minimizing radial temperature gradients and mechanical deformation during sustained high-temperature operation. In typical SiC CVD and MOCVD processes, where growth temperatures often exceed 1600°C and rapid thermal cycling is common, the graphite disc maintains flatness and dimensional stability. This enables reliable wafer positioning and uniform heat transfer throughout the epitaxial cycle.

From a process perspective, the 8-inch graphite disk plays a decisive role in defining the thermal boundary conditions at the wafer-substrate interface. By providing predictable and uniform heat flux, it helps suppress edge roll-off effects, reduces stress-induced defects, and enables tighter control over epitaxial layer thickness across the entire wafer surface. The high purity of the graphite substrate further minimizes risks of metal contamination and background impurity incorporation, which is critical for power device-grade SiC epitaxy requiring low defect density and high electrical consistency.

As a leading Chinese manufacturer and supplier of epitaxial components, Semixlab's 8-inch Graphite Disk for SiC Epitaxy is specifically engineered for demanding SiC epitaxial production environments. By combining high-purity isostatic graphite with precision machining and rigorous quality control, this product delivers the stability, cleanliness, and repeatability required for high-volume 8-inch SiC epitaxy. This enhances yield rates, maximizes equipment uptime, and reduces total cost of ownership. Simultaneously, Semixlab remains committed to providing leading technical consulting services and customized product solutions. We sincerely look forward to becoming your long-term partner in China.