VGF Crucible (Vertical Gradient Freeze Crucible): A key container used in the Vertical Gradient Freeze (VGF) method for growing compound semiconductor single crystals. It is designed to hold molten polycrystalline raw materials and enables controlled crystal growth by precisely regulating the temperature gradient, allowing the melt to solidify progressively from bottom to top. It is widely used in semiconductor single crystal growth applications.
Molten Feedstock Containment: Used to hold polycrystalline semiconductor materials such as GaAs and InP, enabling uniform melting through compatible heating systems.
Assisted Directional Solidification: Leveraging its high-temperature resistance and low-contamination properties, it works with thermal control systems to establish a vertical temperature gradient, guiding the melt to solidify slowly from bottom to top into a single crystal.
Ensuring Single Crystal Quality: High-purity inert materials prevent reactions and impurity introduction, reduce melt volatilization, and ensure high purity and low defect density in the resulting single crystal.
Customizable Specifications: Available in customized sizes to support both laboratory R&D and industrial production, meeting single crystal growth requirements ranging from 2-inch to 8-inch diameters.
