High-purity quartz wafer carrier

The High-purity Quartz Wafer Carrier (also known as High Purity Quartz Wafer Boat) is a critical component in semiconductor fabrication processes. Designed to securely hold and transport silicon wafers, it ensures precise wafer alignment during diffusion, oxidation, LPCVD, ALD, annealing, and cleaning processes.

Its high-purity quartz construction prevents contamination and maintains the integrity of wafers, enabling consistent yield and optimal performance in cleanroom environments.

Material & Physical Properties

●Material: 99.99% high-purity synthetic fused quartz

Key Physical Properties & Parameters:

●Purity: ≥ 4N (99.99%) – minimizes metallic and particle contamination

●Thermal Resistance: Stable up to 1,050°C – 1,200°C in continuous operation

●Thermal Shock Resistance: Low coefficient of thermal expansion (0.55×10⁻⁶/°C)

ensures durability in rapid temperature changes

●Chemical Stability: Excellent resistance to acidic and alkaline process gases

●Dimensional Accuracy: Tolerance within ±0.05 mm for uniform wafer spacing

●Surface Finish: Ultra-smooth polished surfaces (Ra ≤ 0.2 μm) to prevent wafer scratches

●Transparency: High UV and IR transmittance for optical process monitoring

Applications of High-Purity Quartz Wafer Carriers Across Processes

The versatility of high-purity quartz wafer carriers extends across a wide spectrum of semiconductor manufacturing steps. Their robust design and material integrity ensure optimal performance in even the most challenging environments:

●Diffusion & Oxidation Furnaces: In these critical thermal processes, our quartz wafer boat carriers provide stable, contamination-free support for wafers. Their high thermal stability and low thermal expansion prevent stress on the wafers, ensuring uniform film growth and doping profiles essential for device functionality.

●Chemical Vapor Deposition (CVD): During CVD, thin films are deposited onto wafers. Our quartz carriers maintain their structural integrity and purity even in the presence of reactive gases and high temperatures, preventing particle generation and ensuring high-quality film deposition.

●Annealing: Post-implantation annealing requires precise temperature control. Quartz carriers ensure uniform heat distribution across the wafer, promoting crystal lattice repair and dopant activation without introducing impurities.

●Wet Etching & Cleaning: Although typically used in dry processes, quartz boats are also employed in certain wet stations where their chemical inertness to a wide range of acids (excluding HF) is beneficial for holding wafers during specific cleaning or etching steps.

●Ion Implantation: While not directly involved in the implantation itself, quartz carriers are used for loading and unloading wafers into the implanter, ensuring secure handling.

●Photolithography: For transport and handling of wafers between various photolithography steps (e.g., coating, exposure, development), our carriers provide a stable and clean platform.

Each application leverages the unique properties of quartz to maintain the high standards of cleanliness, temperature control, and mechanical stability required for producing advanced semiconductor devices.

Semixlab Service Advantages

At Semixlab, we are a trusted High-purity Quartz Wafer Carrier Manufacturer with extensive expertise in semiconductor process components. We provide:

● Custom Design & Manufacturing – Tailored dimensions, slot numbers, and carrier designs to match specific wafer sizes (4", 6", 8", 12") and furnace types.

● Technical Consultation – Process-specific recommendations to optimize yield and reduce downtime.

● Prototype & Sample Service – Rapid prototyping and sample evaluation for qualified projects.

● Strict Quality Control – ISO-certified manufacturing and 100% inspection before shipment.