Monocrystalline silicon (Si) is a chemically inert material with high hardness and insolubility in water. It is between 1.2 and 7μm
The band has excellent light transmission performance and is a commonly used infrared optical material. Silicon material has
The feature of low density (its density is half that of germanium or zinc selenide materials) in some counterweights
It is particularly suitable for occasions where quantity requirements are sensitive. Due to its good thermal conductivity and low density, this material is often used
Laser mirrors or infrared temperature measurement and thermal imaging Windows can be made. The products can be coated or not
Membrane. The density of monocrystalline silicon is 2.316g/ cm ³, and its Knopper hardness is 1150, making it less prone to breakage than germanium materials.
Silicon can be divided into coated and uncoated types, and is customized according to the customer’s requirements.
| Material | Monocrystalline Silicon (Si) |
|---|---|
| Size Range | 3 – 500mm |
| Size Tolerance | ±0.1mm |
| Thickness Tolerance | ±0.1mm |
| Surface Accuracy | 1λ |
| Clear Aperture | ＞95% |
| Protective Edge Chamfer | 0.1 – 0.5*45° |
| Coating Specification | 3 – 5um Tave>97% 8 – 12um Tave>90% |
| Transmission Wavelength Range | 1 – 20um | Heat Capacity (j/g.k) | 0.733 |
|---|---|---|---|
| Density (g.cm⁻³) | 2.33 | Knoop Hardness (kg/mm²) | 1150 |
| Melting Point (°C) | 1420 | Young’s Modulus (GPa) | 131 |
| Dielectric Constant | 13@GHZ | Poisson’s Ratio | 0.266 |
| Coefficient of Thermal Expansion (1/°C) | 4.15*10⁻⁶ | Elastic Coefficient | C11=167 C11=65 C11=80 |
| Bulk Modulus (GPa) | 102 | Absorption Coefficient | 1.6*10⁻⁴ |
| Shear Modulus (GPa) | 79.9 | Thermo – optic Coefficient.dn/dT(1/°C) | 1.6*10⁻³@3000nm |
| Thermal Conductivity (j/k.m.s) | 163.3@273K |
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