Semiconductor Substrates
Silicon, SOI, Compound & Custom Wafers — complete substrate portfolio from 100mm to 300mm with full material engineering support.
Overview
Every semiconductor device — from the simplest MEMS sensor to the most advanced 3nm logic processor — begins with a substrate. The wafer is not merely a mechanical carrier; its crystalline perfection, doping profile, surface quality, and dimensional tolerances directly determine device yield, performance, and reliability. GINECHIP's substrate portfolio spans the full spectrum of semiconductor materials: silicon (CZ, FZ, MCZ), silicon-on-insulator (SOI), compound semiconductors (SiC, GaN, GaAs, InP), glass and quartz, coated substrates with pre-deposited films, and specialty materials including sapphire and ceramics.
We serve semiconductor foundries, MEMS fabs, R&D laboratories, universities, and packaging houses across 50+ countries. Every substrate lot ships with an ISO 9001:2015 Certificate of Conformance, full lot traceability to the ingot or boule, and comprehensive metrology data — resistivity maps, thickness profiles, crystallographic verification, and particle counts. Whether you need a single box of test wafers for process qualification or a multi-year supply agreement for production volumes, our substrate team provides consistent quality, competitive pricing, and responsive technical support.
Beyond catalog products, GINECHIP offers full substrate customization: non-standard resistivities with ±1% tolerance bands, exotic crystal orientations with sub-degree off-cut precision, engineered backside film stacks for gettering or etch-stop, custom flat/notch configurations, laser-marked wafer IDs, and multi-parameter specifications for demanding device architectures. Our substrate engineers work directly with your process integration team to translate device-level requirements into precise material specifications.
Substrate Categories
Silicon Wafer Substrate
The foundational semiconductor substrate. Available in CZ, FZ, and MCZ growth methods. Diameters 100mm–300mm with P-type, N-type, or intrinsic doping. Surface finishes from SSP and DSP to CMP and epi-ready. Orientations ⟨100⟩, ⟨111⟩, ⟨110⟩ with resistivity from 0.001 Ω·cm to over 10,000 Ω·cm.
SOI Wafer
Silicon-on-Insulator wafers with Smart Cut™ or BESOI fabrication. Device layer thickness from 50nm to 100μm with buried oxide (BOX) from 100nm to 2μm. Available in 200mm and 300mm diameters. HR-SOI and FD-SOI for RF/analog applications; PD-SOI for high-performance digital. Superior isolation, reduced parasitic capacitance, and latch-up immunity.
Compound Semiconductors
III-V and wide-bandgap compound semiconductor wafers. SiC 4H and 6H polytypes for power electronics; GaN-on-Si and GaN-on-SiC for RF power and LEDs; semi-insulating GaAs for MMICs; InP for photonics and high-speed electronics. HEMT epitaxy and 650V–1700V SiC MOSFET-ready substrates available.
Glass Substrates
Optically transparent, electrically insulating substrates for bio-MEMS, microfluidics, photonics, and advanced packaging. Fused silica, Borofloat®, AF32® eco, D263® T, and quartz (AT/SC-cut). UV to IR transmission >90%, CTE from 0.55 to 7.2 ppm/K. TGV-compatible grades for 2.5D/3D interposer applications with lower RF loss versus silicon.
Coated Substrates
Pre-coated wafers with engineered thin films. Thermal SiO₂ up to 2μm, LPCVD Si₃N₄, polysilicon backseal, metal films (Al, Ti, Au, Pt, Cr), and multi-layer ONO stacks. Available as blanket coatings or patterned films.
Other Materials
Specialty substrates: Sapphire (Al₂O₃) for LED epitaxy and SOS RF; AlN (170–230 W/m·K) for high-power packaging; alumina ceramics 96% and 99.6% for high-temperature isolation; LTCC/HTCC ceramics for multilayer circuits; SOI on sapphire for radiation-hard electronics.
Ingots & Bulk Sale
Full and partial semiconductor ingots for customers who perform their own wafering. CZ and FZ silicon ingots and SiC boules. Diameters 100mm–300mm. Volume pricing available. Ingot characterization data included — resistivity axial profile, crystallographic verification, oxygen/carbon content, and lifetime measurement.
Customization Services
Standard substrates meet standard requirements. Advanced devices demand custom-engineered wafers. GINECHIP's customization services enable you to specify every material parameter — resistivity, doping, orientation, thickness, surface finish, backside treatment, and film stacks — rather than adapting your process to a catalog product.
Material Customization
Modify doping concentration, resistivity, crystal orientation, and growth method. Achieve ±1% resistivity tolerance across entire wafer lots.
Pattern Customization
Lithographic patterning of alignment marks, test structures, or device-like features prior to shipment. Reduce your mask count and accelerate first-silicon.
Film & Coating Customization
Pre-deposit oxide, nitride, polysilicon, or metal films to your exact thickness and uniformity specification. Single-layer, bi-layer, and multi-layer stacks.
Daisy Chain Wafers
Wafers with interconnected test structures for packaging reliability evaluation. Monitor resistance chains for continuity and leakage testing.
Dummy Die Fabrication
Mechanical die singulated to your footprint without active circuitry. Ideal for package development, thermal cycling tests, and assembly line qualification.
RDL Bump Wafer
Wafers with redistribution layers and microbumps for advanced 2.5D/3D integration. Fine-pitch RDL down to 2μm L/S and Cu pillar or solder bump options.
Quality & Specifications
Substrate quality is the foundation of semiconductor yield. A wafer with excessive TTV causes lithography defocus across the die; uncontrolled resistivity variation creates within-wafer performance mismatch; surface particle contamination nucleates epitaxial defects. GINECHIP's quality program addresses these risks through rigorous incoming inspection, lot-level metrology, and cleanroom-packaged shipping.
| Quality Parameter | Specification |
|---|---|
| Total Thickness Variation (TTV) | < 1.0 μm standard; < 0.3 μm premium grade. Non-contact capacitive full-wafer mapping with 1mm edge exclusion. Meets SEMI M1-0308. |
| Surface Roughness (Ra / RMS) | Ra < 0.5 nm for CMP-polished wafers measured by AFM (10 μm × 10 μm scan). Epi-ready surfaces verified by haze-free laser inspection. |
| Resistivity Uniformity | Four-point probe or eddy current full-wafer mapping. Within-wafer uniformity < ±3% (standard), < ±1% (custom). Meets SEMI MF84. |
| Crystal Orientation Accuracy | X-ray diffraction (XRD) verification. Standard off-cut tolerance ±0.5°; precision cut ±0.1°. Meets SEMI M13. |
| Surface Particle Count | Laser scanning (Surfscan) with ≥ 0.2 μm sensitivity. < 10 adders @ 0.3 μm for prime wafers. Full-wafer defect maps with classification histograms. |
| Bow, Warp & Flatness | Full-wafer interferometric measurement. Bow < 30 μm, Warp < 40 μm (200mm standard). Meets SEMI M1, M53, and M59. Global and site flatness (SFQR, SBIR) available. |
For substrates requiring additional certification — SEMI Standards compliance statements, RoHS declarations, conflict minerals reporting, or ITAR registration — our quality team provides documentation on request. Every order includes lot-traceable data files in standard formats (CSV, PDF).
Substrate Selection Guide
Choosing the right substrate material is the first and most consequential decision in semiconductor device design. Key selection parameters include:
Cost-optimized Czochralski silicon for the majority of MEMS, CMOS, and general semiconductor applications. Oxygen content provides intrinsic gettering. Available in all grades from prime to dummy. 100mm–300mm.
Float-zone silicon with ultra-low oxygen (< 1×10¹⁶ cm⁻³) and carbon contamination. Required for high-resistivity applications (> 1,000 Ω·cm) such as RF switches, photodetectors, and power devices. Superior minority carrier lifetime.
Silicon-on-Insulator for radiation-hard, high-temperature, latch-up immune, and low-power devices. The buried oxide isolates the active device layer from the handle substrate, eliminating substrate leakage and reducing parasitic capacitance by 50–80% versus bulk silicon.
Silicon carbide with 3× the bandgap and 10× the breakdown field of silicon. The dominant substrate for high-voltage power devices (650V–1700V MOSFETs and Schottky diodes) and high-temperature electronics. Available in 4H and 6H polytypes, 100mm and 150mm.
Gallium nitride epitaxy on silicon or SiC substrates for RF power amplifiers (5G base stations, radar), power conversion (fast chargers, data center PSUs), and LED applications. GaN-on-SiC preferred for high-frequency, high-power RF; GaN-on-Si for cost-sensitive power applications.
III-V compound semiconductors with direct bandgaps for optoelectronics (lasers, photodetectors, VCSELs), high-frequency RF (mmWave PA, LNA), and photonic integrated circuits. Semi-insulating GaAs substrates for monolithic microwave integrated circuits (MMICs).
Optically transparent, electrically insulating substrates for bio-MEMS, microfluidics, interposers, and photonics. Through-glass via (TGV) technology enables cost-effective 2.5D packaging with lower RF loss than silicon interposers. Fused silica for DUV applications.
Extreme-environment substrates: sapphire for hardness, optical transparency, and chemical resistance; AlN for high thermal conductivity (170–230 W/m·K); alumina ceramics for high-temperature and high-voltage isolation. Custom geometries available.
Ready to Specify Your Substrate?
Tell us your material, diameter, resistivity, orientation, and surface finish requirements — our substrate engineering team will respond with availability, pricing, and a custom quotation within 24 hours.