Each component is synthesized from high-purity quartz sands, precision-sliced, diamond-ground, and optical-grade polished under rigorous metrology control to withstand operating temperatures exceeding 1,150°C.
A comprehensive analytical breakdown of high-purity quartz (HPQ) wafer carrier plates, optical quartz discs, and thermal barrier slabs across the global manufacturing matrix.
The global push toward sub-5nm and 3nm node fabrication, paired with mature node capacity ramp-ups in North America, Europe, Japan, and Taiwan, has driven an unprecedented demand for plasma-resistant, low-bubble quartz plates. In dry etch, LPCVD, and atomic layer deposition (ALD) environments, quartz plates act as chamber viewports, gas distribution showerheads, and wafer pedestal liners that must withstand aggressive CF4, NF3, and Cl2 chemistries without particle exfoliation.
The solar photovoltaic industry's rapid structural transition from P-type PERC to N-type TOPCon, HJT, and Perovskite-Silicon tandem architectures necessitates ultra-large quartz thermal baffles, diffusion boat support plates, and PECVD carrier substrates. With tube furnace operating cycles running continuously between 1,050°C and 1,200°C, quartz plates engineered with negligible alkali impurity profiles prevent catastrophic wafer warp and boron/phosphorus cross-contamination.
From high-power excimer laser windows and UV-C disinfection flow cells to optical lithography photomasks, precision synthetic quartz plates (JGS1) provide near-unity transmittance (>90% at 200nm) combined with zero fluorescent degradation under high-fluence irradiance. Industrial manufacturers worldwide rely on certified fused silica plates to maintain optical wave-front integrity without thermal defocusing.
Engineered for extreme reliability under severe thermal gradients, high voltage RF electromagnetic fields, and ultra-harsh acid/alkali exposures.
| Physical / Chemical Property | Test Standard | Natural Fused Quartz Plate (JGS2) | Synthetic Fused Silica Plate (JGS1) | Infrared Optical Quartz Plate (JGS3) |
|---|---|---|---|---|
| Silicon Dioxide Content (SiO2) | ICP-MS / GDMS | ≥ 99.99% (4N) | ≥ 99.9999% (6N) | ≥ 99.995% (4.5N) |
| Hydroxyl (OH-) Concentration | FTIR Spectrometry | 100 – 250 ppm | 800 – 1200 ppm (UV Enhanced) | ≤ 5 ppm (Water-Free IR Grade) |
| Useful Spectral Transmission Range | UV-Vis-NIR Spectrophotometer | 260 nm – 2,500 nm | 185 nm – 2,500 nm (Deep VUV) | 260 nm – 3,500 nm (No OH Dip) |
| Continuous Operating Temperature | ASTM C598 | 1,100°C | 1,050°C | 1,150°C |
| Short-Term Max Service Peak | Pyrometric Cones | 1,280°C | 1,200°C | 1,300°C |
| Coefficient of Thermal Expansion (CTE) | Dilatometry (20°C to 320°C) | 5.5 × 10-7 cm/cm·°C | 5.2 × 10-7 cm/cm·°C | 5.6 × 10-7 cm/cm·°C |
| Dielectric Strength (20°C, 1 MHz) | ASTM D149 | 25 – 40 kV/mm | 35 – 50 kV/mm | 30 – 45 kV/mm |
| Surface Quality / Scratch-Dig | MIL-PRF-13830B | 60/40 to 40/20 | 20/10 to 10/5 (Laser Grade) | 40/20 to 20/10 |
| Wavefront Transmitted Distortion | He-Ne Laser Interferometry | λ/2 per inch | λ/4 to λ/10 per inch | λ/4 per inch |
At standard operating thresholds above 1,150°C, fused silica quartz plates naturally undergo thermodynamic crystallization into crystalline cristobalite. Our proprietary thermal annealing cycles and specialized mechanical acid etching processes strip away micro-fissures and residual surface alkali ions (Na, K, Li), lowering devitrification velocity by up to 60%. Because our quartz plates exhibit an extraordinarily low linear thermal expansion coefficient (5.5 × 10-7/K), components can be repeatedly plunged from 1,100°C into 20°C cold water without micro-cracking or fracturing.
Industrial quartz plates are chemically non-reactive to nearly all inorganic acids (including hydrochloric, sulfuric, and nitric acids) even at boiling points, dissolving only in hydrofluoric acid (HF) and concentrated phosphoric acid above 150°C. In dry etching plasma chambers (fluorine-based chemistries such as CF4/O2, SF6, and NF3), our high-density quartz plates demonstrate homogeneous, ultra-slow etch erosion rates, preventing metallic lattice poisoning and ensuring cleanroom particulate conformity.
From single wafer wet-benches to massive photovoltaic horizontal diffusion tubes, discover how tailored quartz plates eliminate structural failure modes.
Employed as furnace baffle plates, horizontal boat end plates, CVD reactor quartz viewports, and chemical mechanical planarization (CMP) conditioning base plates. Our semiconductor-grade plates preserve vacuum chamber integrity up to 10-7 Torr without outgassing.
Utilized as heavy-duty load plates, thermal radiation shields, and gas guiding plates in N-type TOPCon boron/phosphorus diffusion furnaces. Capable of supporting multi-kilogram loads of large-format M10/G12 silicon wafers through 24/7 continuous thermal cycling.
Specified for fiber laser protective windows, CO2/Nd:YAG laser beam splitters, and high-frequency RF window flanges. Fabricated with parallel tolerances under 3 arcseconds and surface flatness up to λ/10 to prevent phase aberration.
Installed inside extreme pressure boilers, synthesis autoclaves, and hazardous reactor columns. Custom thermally tempered quartz discs and rectangular plates withstand continuous operating pressure exceeding 15 MPa while providing visual clarity.
Our modernized workshop combines automated 5-axis CNC diamond grinding, ultrasonic micro-hole drilling, optical double-sided chemical mechanical polishing, and fire polishing.
Equipped with high-precision multi-axis machining centers, we perform complex chamfering, precision slotting, stepped grooving, and blind cavity routing on quartz plates up to 1,500 mm × 1,500 mm. Ultrasonic vibrational spindle drilling enables micro-hole patterns (diameters ≥ 0.3 mm) with zero edge chipping or micro-cracking.
Utilizing planetary double-sided lapping machines with cerium oxide and diamond slurries, we achieve optical mirror finishes (scratch-dig 20/10, surface roughness Ra < 0.2 nm). Every optical window plate is inspected under Zygo laser interferometers to certify thickness parallelism (< 0.005 mm) and optical flatness.
Finished quartz plates undergo ultrasonic multi-stage hot deionized water immersion, acid etching (HF/HNO3) for residual stress removal, and drying in a Class 100/1000 cleanroom environment. Sealing flange quartz plates and bonded manifolds undergo helium mass-spectrometry leak rates < 1×10-9 mbar·L/s.
Forecasting the material transitions, dimensional scaling, and plasma resistance requirements steering the next decade of advanced manufacturing.
As semiconductor wafer diameters push toward expanded carrier formats and photovoltaic cells adopt monolithic G12+ wafer profiles, demand is accelerating for continuous plasma-fused quartz plates exceeding 1.8 meters in length with tight warp tolerances (≤ 0.1 mm/meter). Manufacturing innovations focus on vertical annealing furnaces to eliminate internal thermal residual birefringence.
To resist corrosive fluorine-based ICP dry etching in advanced 3D NAND and gate-all-around (GAA) nanosheet manufacturing, next-generation quartz plates are incorporating rare-earth oxide dopants (such as Y2O3 or Al2O3). This creates a nanometer-scale protective fluoride passivation barrier during operation, reducing particle generation rates by more than 75%.
The convergence of femtosecond laser-assisted chemical etching (FLICE) and high-purity silica slurry stereolithography is transitioning quartz plates from planar substrates into three-dimensional integrated optical and microfluidic lab-on-a-chip architectures for quantum photonics and deep space spectrometry.
Strategically positioned in Donghai County — the world's preeminent silica synthesis and crystal manufacturing cluster — we provide complete supply chain control from raw ore purification to customized crating.
Immediate access to premium-grade natural crystal raw stock and synthetic precursor supply chains guarantees uninterrupted production runs, mitigating the lead-time volatility seen in Western fused silica markets.
Our engineering team reviews your STEP, DWG, or PDF CAD drawings within 24 hours. Small-batch R&D pilot samples and large-scale wholesale production runs are accommodated with dedicated CNC setups.
Every industrial quartz plate batch is accompanied by comprehensive Certificate of Analysis (COA) documentation, including ICP-MS metallic impurity spectra, OH-content FTIR plots, and spectrophotometer transmission scans.
Each plate is double-bagged in anti-static cleanroom PE wrapping, vacuum-sealed with desiccant, cushioned with shock-absorbent custom high-density EPE foam, and encased within shock-tested export wooden crates.
Complementing our flat plate catalog, explore factory-direct oversized quartz furnace tubes, wafer carrier boats, and precision heating accessories.
Clear, engineering-driven answers to the most frequent technical, thermal, and logistical inquiries submitted by sourcing teams and apparatus designers.
