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  • Germanium

    Germanium


    The Infrared Business Unit of Vital Materials can provide a variety of germanium products such as germanium tetrachloride, germanium dioxide, reduced germanium, zone germanium ingot, solar germanium, and infrared germanium. As an important rare metal, germanium is widely applied in fields of aerospace, semiconductor, optical fiber communication, infrared optics, solar cells, biomedicine and others.
    Germanium can also act as the doping agent for quartz-based optical fibers. Germanium tetrachloride can increase the refractive index of the fiber core, reduce the optical loss and thus increase the transmission distance of the optical fiber. It is mainly used in the field of optical fiber communication.

    Germanium has good light transmittance within the infrared wave band and opacity in the visible spectrum. It is the most common material for making infrared optical lenses, lens blanks, and infrared optical windows within the wave band range of 2-14μm.
    Physical Properties
    Density, 298K, (g/cm3)  5.33
    Crystal Structure  Monocrystalline/Polycrystalline
    Resistivity  0.0001Ω·cm - 75Ω·cm
    Optical Transmittance, 10.6 μm ≥45.0%
    Wavelength Refractive Index
    10 (20°C) 4.00462
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