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氧化硅片Silicon oxide wafer
Silicon dioxide (SiO₂) wafers, also known as silicon oxide wafers, are critical components in semiconductor manufacturing, optoelectronics, and microelectromechanical systems (MEMS). These high-purity substrates are fabricated through thermal oxidation or chemical vapor deposition (CVD), forming a dense, uniform oxide layer with exceptional thermal stability and electrical insulation properties.
 
In semiconductor processes, SiO₂ wafers serve as gate oxides in MOS transistors, isolation layers for device separation, and masking layers during ion implantation. Their optical transparency and low refractive index make them ideal for applications like optical waveguides and photonic devices. For instance, in AWG (arrayed waveguide gratings), SiO₂ films ensure precise refractive index control for high-performance optical components.
  • High dielectric strength (up to 10 MV/cm) for reliable insulation.
  • Uniform thickness control (ranging from nanometers to micrometers) via dry or wet oxidation processes.
  • Chemical inertness and resistance to harsh etching environments.

Technical Parameters

ProjectContent
Diameter2"(50.8mm)、3"(76.2mm)、4"(100mm)、5"(125mm)、6"(150mm)、8"(200mm)、12"(300mm)
GradePrime、Test、Dummy、Reclaimed
Oxidation TechniqueWet oxidation or Dry oxidation
Oxide Thickness100 Å ~ 15µm
Tolerance+/- 5%
SurfaceSingle Side Oxidation(SSO) / Double Sides Oxidation(DSO)
FurnaceHorizontal tube furnace
GasHydrogen and Oxygen gas
Temperature900℃ ~ 1200 ℃
Refractive index1.456
CVD Silicon Oxide Wafer
Silicon Dioxide Wafer

Technical Advantages

  1. Ultra-High Purity & Uniformity: Our silicon oxide wafers (SiO₂) are engineered with 99.999999% purity, ensuring minimal defects and exceptional uniformity for precise semiconductor fabrication and MEMS applications.

  2. Superior Thermal Stability: Withstanding extreme temperatures up to 1200°C, our SiO₂ wafers maintain structural integrity in high-temperature processes like thermal oxidation and CVD, critical for advanced IC manufacturing.

  3. Optimal Dielectric Performance: Featuring high dielectric strength (>10 MV/cm), our oxide layers enable efficient electrical insulation, reducing leakage currents and enhancing device reliability in microelectronics and power semiconductors.

  4. Chemically Inert Surface: The inert nature of our SiO₂ wafers resists corrosion from acids, bases, and plasma, ideal for harsh etching environments and long-term stability in MEMS and optoelectronic devices.

  5. Nanoscale Precision: Customizable oxide thickness (1nm to 2µm) and ultra-smooth surface roughness (<0.5nm RMS) support cutting-edge nanotechnology, photolithography, and quantum device research.

  6. Versatile Integration: Compatible with silicon substrates and standard CMOS/MEMS processes, our wafers streamline production of sensors, optical coatings, and gate oxides, accelerating time-to-market.

  7. Eco-Friendly Durability: Engineered for high environmental resistance (moisture, UV, oxidation), our SiO₂ wafers extend product lifespans in aerospace, automotive, and renewable energy systems.