Optical Grade Germanium Crystal N Type P Type Factory Custom
Description
Optical Germanium crystals (Ge single crystal and Ge polycrystal) are one of the widely used materials in infrared transmission materials. It has a wide infrared transmission band both in the 3~5μm and 8~12μm, high mechanical strength, not easy to deliquesce, stable chemical properties and other characteristics.
Technical Data
| Diameter(mm) | 12-380 | Surface roughness | Ramax0.2um to 4.0μm |
| Length(mm) | As required | Crystal purity | 5N, 6N |
| Resistivity(Ω·cm) | 0.005-50, ≥50 | Density(g/cm3) | 5.33 |
| Resistivity heterogeneity | 10% | Hardness(kg/cm2) | 800 |
| Crystal orientation | 111 | Poisson’s ratio | 0.28 |
| Crystal orientation deviation | 0.5º | Thermal conductivity(Wm-1k-1) | 59 |
| Crystal form | N ype (P type is OK) | Thermal expansivity(10ˉ6/℃ˉ1) | 6.1 |
| Refractive index(10.6µm) | 4.0052 | Specific heat Cal/(g.k) | 0.074 |
| Absorption coefficient(10.6µm) | <1×10ˉ4 | Melting Point(℃) | 937 |
Content of Key impurities (ppm weight)
| Element | Standard | Element | Standard |
| Mg | — | Ni | 1.0 |
| Al | 2.0 | Cu | 2.0 |
| Si | — | Zn | — |
| Cr | — | As | 1.0 |
| Fe | 2.0 | In | — |
| Co | 1.0 | Pb | 1.0 |
Germanium Crystal Application
- Raw material for making germanium piece.
- Infrared and optical germanium blank parts.
Packaging, transportation and storage
- Packaging: inner vacuum bags and wrapped in poly-foam box, carton box outside.
- Transportation: by Fedex, DHL, UPS with door to door delivery, by Air for urgent order.
- Storage: store germanium crystal in a dry, clean environment to avoid damage and pollution.
R&D Center
CNGE has set up a dedicated research center, equipped with a team of experienced professionals, leading manufacturing, research and development equipment, and applied research closely integrated with various universities and institutes since 1960.
In accordance with ISO9001:2015, we have improved a set of “relying on scientific and technological innovation, taking product quality as life, carefully manufacturing beyond expectations, creating industry first-class brand” as the quality policy system.
Welcome to China Germanium Factory
Contact us for more information
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