Silicon Carbide Boat

Silicon Carbide Wafer Boat (SiC Wafer Boat)

What is a silicon carbide wafer boat?

A silicon carbide (SiC) wafer boat is a high-temperature ceramic carrier used to hold and transport semiconductor or photovoltaic wafers through diffusion, oxidation, annealing and other thermal process steps. Manufactured from recrystallized or CVD-coated silicon carbide, wafer boats combine excellent thermal shock resistance, chemical stability and mechanical strength, allowing them to withstand repeated high-temperature cycling without deformation or particle generation. The boat's slot design, wall thickness and coating directly affect wafer loading capacity, temperature uniformity and contamination control in downstream processes; therefore correct selection and quality control of wafer boats are critical to customer production lines.

Semicera's silicon carbide wafer boat product line spans multiple structural forms — from vertical boats to horizontal boat plates and furnace carriers — supporting customization of slot count, dimensions, coating type and surface finish based on customer furnace types and process requirements.

Product line

This category includes the following sub-products, each available in customized specifications:

Core Technical Specifications

The following lists common customizable specification ranges for silicon carbide wafer boat products; the exact values are subject to the Order Confirmation Form:

Note: Recrystallized SiC boats are produced without a binding phase, giving them excellent thermal shock resistance and long service life under repeated high-temperature cycling; CVD-coated boats add a dense, low-particle surface layer that further reduces metallic and particulate contamination, making them particularly suitable for advanced semiconductor processes with strict cleanliness requirements. This difference is a key criterion when selecting a boat type for a given process.

Production and Testing Process

The entire process is carried out within a controlled production environment; for all critical processes, detailed inspection data records are maintained to ensure consistent and traceable parameters across batches.

Application area

• ● Semiconductor diffusion & oxidation furnaces: wafer carrying for high-temperature thermal processes
• ● Photovoltaic (solar) cell diffusion: boron/phosphorus diffusion process wafer handling
• ● Crystal growth & epitaxial processes: high-purity carriers for controlled growth environments
• ● CVD/CVI processes: chemical vapor deposition carrier applications
• ● Annealing furnaces: post-implant and post-deposition annealing wafer support
• ● Research and process validation: small-batch customized boats for laboratory use

Why choose us?

Integrated materials capability: The company maintains comprehensive product lines encompassing silicon carbide (SiC) coatings, quartz, graphite, carbon fiber, and wafer products, enabling it to provide end-to-end material support to semiconductor equipment and wafer manufacturing customers — rather than merely offering standalone product supplies.

Customized production: Non-standard customization is available based on specific furnace types and process parameters provided by the customer (e.g., slot count, pitch, dimensions, coating type), and small-batch sample validation is supported.

Quality System and Testing Capabilities: The production process is subject to testing in accordance with SEMI standards (dimensional inspection, load-bearing testing, and particle count verification); relevant qualification and certification information can be found on the Qualifications and Honors page.

Frequently Asked Questions (FAQ)

Q: How should one choose between recrystallized SiC boats and CVD-coated SiC boats?

A: For general diffusion and annealing processes where cost is a primary concern, recrystallized SiC boats represent an economical and durable choice; for advanced processes with strict particle and metallic contamination requirements, CVD-coated SiC boats are recommended.

Q: What is the difference between vertical wafer boats and horizontal boat plates?

A: Vertical wafer boats are designed for vertical furnace tubes and typically offer higher wafer density per load; horizontal boat plates and horizontal-chamber furnace boats are used in horizontal tube furnaces and are optimized for ease of loading/unloading and even heat distribution.

Q: Does the service support non-standard dimensions or small-batch prototyping?

A: Support – Slot count, pitch, dimensions and coating type can be customized according to the customer's furnace drawings or specification requirements; sample boats will be provided for verification before proceeding to mass production.

Q: How can we confirm whether the wafer boat parameters meet our production line requirements?

A: We recommend providing the target furnace type, wafer size, slot count/pitch requirements, and process temperature range; based on these specifications, we will provide selection recommendations and a technical evaluation report.

Request a Quote and Technical Documentation

To obtain quotes for specific silicon carbide wafer boat specifications, download the product technical parameters sheet, or discuss customized non-standard solutions, please submit your request via the "Contact Us" page; we will respond within 24 hours.