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Silicon wafers are the fundamental substrates used in semiconductor manufacturing, serving as the base for integrated circuits, microelectromechanical systems (MEMS), and photovoltaic devices. Their exceptional electrical properties, uniform crystal structure, and surface quality make them essential for high-precision electronic applications. Alfa Chemistry provides high-quality silicon wafers tailored to meet the demanding requirements of research and industrial applications.
Silicon wafers come in various types, including but not limited to monocrystalline wafers, high resistivity wafers, and silicon oxide wafers. Key specifications include diameter (ranging from 2 inches to 12 inches), thickness, resistivity, crystal orientation (<100>,<110>,<111>), and surface flatness. Additional parameters such as doping type (N-type or P-type), defect density, and wafer edge profile further determine their suitability for specific semiconductor processes.
We offer silicon wafers in various types and specifications to meet the needs of different projects:
Monocrystalline Silicon Wafers
Catalog Number: ACSEM-WS-0006
Growth Mode: CZ, FZ
Diameter Choices: 2", 3", 4", 5", 6", 8", 12", or custom sizes
Surface Finishing: Single-side polished, double-side polished
Crystal Orientation:<100>,<111>,<110>, and special crystal orientations
Thickness: 50 μm–2 mm, with common options including 200 μm / 500 μm / 1 mm
Conductivity Type: N-type, P-type, intrinsic semi-insulating
Resistivity: Heavily doped<0.001 100="" lightly="" doped="" undoped="">1000~>20000 Ω·cm
High Resistivity Silicon Wafers
Catalog Number: ACSEM-WS-0007
Growth Mode: FZ, NTDFZ
Diameter Choices: 2", 3", 4", 5", 6", 8", 12", or custom sizes
Surface Finishing: Single-side polished, double-side polished
Crystal Orientation:<100>,<111>,<110>, and special crystal orientations
Thickness: 50 μm–2 mm, with common options including 200 μm / 500 μm / 1 mm
Conductivity Type: Undoped semi-insulating
Resistivity: >1000Ω·cm, >3000Ω·cm, >5000Ω·cm, >10000Ω·cm, >20000Ω·cm
Silicon Oxide Wafers
Catalog Number: ACSEM-WS-0008
Diameter Choices: 2", 3", 4", 5", 6", 8", 12", or custom sizes
Surface: Single-side oxidized, double-side oxidized
Crystal Orientation:<100>,<111>,<110>
Processing Methods: Oxidation furnace / PECVD, etc.
Conduction Type: N-type, P-type, undoped high-resistivity
Resistivity: Heavily doped<0.001 100="" lightly="" doped="" undoped="">1000~>20000 Ω·cm
Silicon Nitride Wafers
Catalog Number: ACSEM-WS-0009
Diameter Choices: 2", 3", 4", 5", 6", 8", 12", or custom sizes
Crystal Orientation:<100>,<111>,<110>
Thickness: 5 nm–10 μm; common thicknesses are 100 nm, 500 nm
Surface: Single-side oxidized, double-side oxidized
Processing Methods: Oxidation furnace / PECVD, etc.
Conduction Type: N-type, P-type, undoped high-resistivity
Resistivity: Heavily doped<0.001 100="" lightly="" doped="" undoped="">1000~>20000 Ω·cm
Metal Layer Coated Silicon Wafers
Catalog Number: ACSEM-WS-0010
Diameter Choices: 2", 4", 6", 8", or custom sizes
Process: Magnetron sputtering / thermal evaporation / electroplating, etc.
Structure: Substrate + adhesion layer + metal layer
Substrate Materials: Silicon wafer, quartz, etc.
Types of Metal Films: Gold (Au), Platinum (Pt), Aluminum (Al), Copper (Cu), Nickel (Ni), Silver (Ag), etc.
Metal Film Thickness: 10 nm–10 µm; common thicknesses are 100 nm, 300 nm, 500 nm
Shaped Silicon Wafers
Catalog Number: ACSEM-WS-0011
Shapes: Round, square, triangular, etc.
Conduction Type: N-type, P-type
Crystal Orientation:<100>,<110>,<111>, and various special orientations
Diameter: 5–300 mm
Resistivity: 0.001–20000 Ω·cm
Diameter Tolerance: ≤0.03 mm
Chamfer: Arc and various other forms
By providing a wide selection of silicon wafer types, Alfa Chemistry supports diverse semiconductor and microfabrication needs. With a focus on quality, customization, and technical support, our company empowers researchers and engineers to accelerate innovation. Contact us now to find the ideal solution for your project.
If you do not find the product or would like to request a quote, please contact us.