Organic Germanium (Ge)
Introduction
Germanium is lustrous, hard, grayish-white solid metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. The purified germanium is a 'p-type' semiconductor material. The conductivity depends largely on added impurities. It has the same cubic crystal structure as diamond.
It has a high refractive index and is high transparency to infrared radiation. Germanium is a semiconductor and is one of the purest metals on earth (99.99999999999%).
It has a high refractive index and is high transparency to infrared radiation. Germanium is a semiconductor and is one of the purest metals on earth (99.99999999999%).
Chemical Properties of Germanium
| Atomic Symbol | Ge |
|---|---|
| Atomic Number | 32 |
| Atomic Weight | 72.63 |
| Density | 5.323 g/cm3 |
| Melting Point: | 937.4℃ |
| Boiling Point | 2830℃ |
| CAS No. | 7440-56-4 |
| EINECS No. | 231-164-3 |
Specifications
| Purity | 3N-4N |
|---|---|
| Size | 100 Mesh |
| Packing | 1 kg/bag or bottle |
Applications:
1. Ge is used mainly in three applications: optical fiber, infrared optics, and catalyst in PET synthesis.
2. Optical fiber: In the form of GeCl4, GeO2 is deposited in the core of the fiber. GeO2 has a high refractive index and a low optical dispersion.
3. Infrared optics: Ge is used as lenses or windows. It is used in thermal imaging cameras, hot-spot detection mobile night vision applications.
4. Catalyst: GeO2 is used as a catalyst for the synthesis of polyethylene terephthalate (PET) used to make bottles.
5. Ge is also used electronic applications such as LEDs.
6. A niche application is ultra-high purity single crystal germanium. This is the most pure metal on earth and is used in gamma radiation detectors.
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