Germanium is a very important semiconductor and is also finding many other
applications including use as an alloying agent, as a phosphor in High Purity
(99.999%) Germanium Oxide (GeO2) Powderfluorescent lamps, and as a catalyst.
Germanium and germanium oxide are transparent to the infrared and are used in
infrared spectroscopes High Purity (99.99%) Germanium (Ge) Sputtering
Targetand other optical equipment, including extremely sensitive infrared
detectors. The high refractive index and dispersion properties of its oxides have
made germanium useful as a component of wide-angle camera lenses and
microscope objectives. Elemental or metallic forms of Germanium include pellets,
rod, wire and granules for evaporation source material purposes. Germanium
oxide is available in forms including powders and dense pellets for such uses as
optical coating and thin film applications. Oxides tend to be insoluble. Fluorides
are another insoluble form for uses in which oxygen is undesirable such as
metallurgy, chemical and physical vapor deposition and in some optical coatings.
Germanium is also available in soluble forms including chlorides, nitrates and
acetates. These compounds can be manufactured as solutions at specified