Quartz Glass for Monocrystalline Silicon | FG Quartz

Published: August 16, 2025

FG Quartz is a leading manufacturer of high-purity quartz glass components, dedicated to providing essential materials for monocrystalline silicon (mono-Si) production. Our products support the semiconductor, solar photovoltaic, and advanced material industries with exceptional thermal stability, chemical inertness, and optical clarity.

Monocrystalline silicon manufacturing demands specialized quartz glass components, including crucibles, seed holders, quartz boats, optical windows, and heating tubes. Each component is engineered to withstand high temperatures, resist contamination, and provide long-term durability for continuous crystal growth processes.

Quartz crucibles are essential for growing high-purity monocrystalline silicon ingots. Manufactured from ultra-high-purity fused quartz, our crucibles provide excellent thermal uniformity and chemical resistance. They are designed to endure temperatures above 1400°C without deformation, preventing contamination that can compromise crystal quality.

Usage Tips:
– Pre-clean crucibles using deionized water and high-purity solvents.
– Avoid sudden temperature changes to reduce thermal shock.
– Inspect crucibles for inclusions or micro-cracks before use.

Seed holders securely position the monocrystalline silicon seed during the Czochralski (CZ) process. FG Quartz produces custom seed holders with precise tolerances to ensure uniform crystal rotation and growth. Our designs minimize contamination and maintain thermal stability even during long-duration pulls.

Recommendations:
– Align seed holders carefully with the crystal axis.
– Use holders that match your crucible size and rotation speed.
– Ensure holders are free of particles that can disrupt crystal integrity.

Quartz boats are used for wafer handling, doping, and annealing processes. FG Quartz boats are manufactured with high precision, ensuring smooth surfaces, accurate dimensions, and minimal contamination. They can be customized for vertical or horizontal crystal pulling systems.

Usage Guidelines:
– Use compatible quartz boats for specific furnace designs.
– Maintain a cleanroom environment to prevent contamination.
– Inspect regularly for cracks or surface imperfections.

Optical windows allow process observation and laser alignment without exposing the crystal to air contamination. FG Quartz optical windows offer high UV and visible light transmission, superior flatness, and resistance to thermal shock. They are used in furnace observation ports and laser measurement systems.

Best Practices:
– Install windows with even pressure to prevent warping.
– Clean surfaces with high-purity solvents to maintain clarity.
– Avoid mechanical shocks during installation.

Quartz heating tubes are essential for uniform temperature distribution in CZ furnaces. FG Quartz heating tubes are designed to resist deformation at high temperatures, providing long service life and minimizing contamination risks. They are available in various diameters and wall thicknesses for different crystal sizes.

Usage Tips:
– Match tube dimensions with furnace specifications.
– Gradually ramp up temperatures to prevent thermal shock.
– Regularly inspect for surface degradation.

FG Quartz high-purity quartz glass components are used in:
– Semiconductor wafer production and annealing
– Monocrystalline silicon ingot growth for solar photovoltaics
– Optical measurement and laser systems
– High-temperature laboratory research
– Advanced materials and chemical processing

By providing components that withstand extreme thermal, mechanical, and chemical stresses, FG Quartz ensures higher yield, longer service life, and reduced contamination risk.

FG Quartz specializes in custom quartz glass solutions, working directly with clients to fabricate:
– Crucibles and seed holders of all sizes
– Quartz boats and wafer carriers
– Optical windows, viewports, and laser alignment components
– Heating tubes, thermal shields, and furnace components

Our engineers ensure every custom part meets strict tolerances, purity standards, and surface quality requirements. Advanced CNC machining, precision forming, and rigorous inspection guarantee the highest reliability for your crystal growth processes.

For custom projects or technical consultations, our experts provide guidance from design to delivery, ensuring seamless integration into your monocrystalline silicon production workflow.

FG Quartz is a premier manufacturer of high-purity quartz glass components. Our products include quartz crucibles, quartz boats, optical windows, heating tubes, and other custom-fabricated parts for monocrystalline silicon production, semiconductor processing, and solar photovoltaic applications.