Precision-fabricated fused quartz vessels, structural carrier systems, and high-temp diffusion apparatuses designed to maintain zero chemical cross-contamination.
In modern microelectronics, horizontal and vertical diffusion furnaces demand carrier boats that offer extreme structural rigidity, zero trace-metal leaching, and tight slot tolerances.
Fabricated using semiconductor-grade synthetic or high-purity natural quartz sand. Total impurity content is strictly restricted to < 15-20 ppm, with alkaline elements (Na, K, Li) kept under 1 ppm to eliminate deep-level carrier recombination centers in silicon.
With an annealing point of 1,215°C and a softening point of 1,683°C, our fused quartz structures resist thermal sag and warpage under mechanical loads during LPCVD and boron/phosphorus diffusion thermal cycles up to 1,250°C.
Wafer pitch stability is achieved via 5-axis CNC diamond grinding. Slot widths and pitch tolerances are controlled to ±0.05 mm, preventing wafer pinch, micro-cracking, or process-induced twin crystal defects during automated robotic transfer.
| Performance Characteristic | Typical Laboratory Value | Test Standard / Methodology | Industrial Significance |
|---|---|---|---|
| Silicon Dioxide (SiO₂) Purity | ≥ 99.995% to 99.999% | ICP-MS Spectrometry | Prevents heavy-metal migration into gate oxides |
| Coefficient of Thermal Expansion (CTE) | 5.5 × 10⁻⁷ / °C (20°C - 320°C) | Dilatometry | Zero micro-fracture risk during 1000°C shock cycles |
| Hydroxyl Ion (OH⁻) Concentration | < 5 ppm (Electrically Fused) / < 30 ppm | FTIR Infrared Spectroscopy | Lower OH ensures higher viscosity and thermal creep resistance |
| De-vitrification Onset | > 1,200°C (under clean atmosphere) | Isothermal Annealing Analysis | Extends cyclic furnace lifetime by 40% |
| Surface Roughness (Slots) | Ra ≤ 0.4 μm (Fire-polished or etched) | White Light Interferometry | Eliminates particle shedding during robot-arm loading |
Located in Donghai, Jiangsu—the global epicentre of quartz synthesis and processing—our industrial cluster offers unmatched vertical integration from feedstock refine to finished assemblies.
Direct proximity to domestic and international raw quartz distribution channels insulates downstream production against global material shortfalls, ensuring uninterrupted supply runs for mass wafer fabrications.
By housing thermal plasma fusing, manual master glassblowing, and multi-axis CNC cold diamond machining under one roof, fabrication lead-times for bespoke quartz boats are compressed by up to 45%.
Our centralized manufacturing ecosystem drastically lowers capital expenditure and tooling costs, delivering premium semiconductor-grade quartz assemblies at competitive total cost of ownership (TCO).
Enterprise procurement teams in North America, the European Union, and APAC require ironclad traceability, low particle counts, and rigorous cleanroom protocol verification.
Every production batch is assigned a unique batch ID linked to raw sand spectroscopy data. Certificate of Analysis (CoA) and Certificate of Conformance (CoC) verify that heavy elements (Fe, Cu, Ni, Cr) are within parts-per-billion ceilings.
Post-etching, quartz boats are washed using 18.2 MΩ·cm ultra-pure deionized (DI) water, dried via ultra-clean nitrogen, and double vacuum-sealed inside antistatic, particle-free bags for cleanroom deployment.
Full conformance with RoHS Directive 2011/65/EU, REACH Regulation (EC 1907/2006), and SEMI (Semiconductor Equipment and Materials International) design recommendations for automated wafer interfaces.
From mature Si technologies to third-generation compound semiconductors and TOPCon photovoltaic lines, fused quartz carriers remain an indispensable thermal medium.
Supporting 100mm, 150mm, 200mm, and 300mm wafer operations across dry/wet oxidation, phosphorus oxychloride (POCl₃) doping, and ultra-high-vacuum LPCVD nitride deposition lines.
Specialized high-purity carrier boats engineered for extreme environments during substrate annealing and hetero-epitaxial activation steps requiring thermal homogeneity.
High-capacity slotted quartz boats handling thin wafers (≤130 μm) at high throughput, maximizing boron diffusion uniformity with minimal warpage and extended lifetime.
Transition toward synthetic fused silica to eliminate trace bubbling and reduce OH content below 1 ppm, unlocking extended thermal cycles without de-vitrification failure modes.
Detailed technical, dimensional, and operational answers for fab managers, vacuum engineers, and global supply managers.
Fused silica structural rods, high-transmission optoelectronic plates, oversized reaction vessels, and specialty fluidic components.
