7440-56-4

CAS Nr.:

7440-56-4

Germanium

EINECS Name:

Germanium

231-164-3

EINECS Nr.:

231-164-3

Germanium

Synonym:

Germanium

Germanium – High-Quality Raw Material for Modern High-Tech Industries. Germanium is a silvery-gray metalloid and is considered one of the strategically important raw materials for numerous high-tech applications. Due to its unique physical and electronic properties, germanium is primarily used in the semiconductor industry, optoelectronics, as well as in glass and energy technologies. The element occurs naturally only in small quantities and is usually obtained as a by-product during the processing of zinc ores or coal.

Physical Properties of Germanium

Germanium is a brittle, crystalline metalloid with a metallic luster. It has a molar mass of 72.63 g/mol and a density of approximately 5.32 g/cm³. Its melting point is around 938 °C, while the boiling point is about 2,833 °C. Germanium exhibits semiconducting properties and is therefore one of the important materials in the electronics industry. The element also has high transparency in the infrared spectral range as well as good chemical stability. This combination of electrical, optical, and thermal properties makes germanium a highly valuable material for demanding technical applications.

Examples of Applications of Germanium

Germanium is one of the classical semiconductor materials and is used in various electronic components. It is applied in transistors, diodes, and integrated circuits as well as in high-frequency components and specialized sensors.

In the telecommunications industry, germanium dioxide is used in the production of fiber optic cables. By doping optical fibers with germanium, highly efficient light conductors can be produced, which are essential for modern data transmission networks and internet infrastructure.

Germanium is frequently used in the production of infrared optics, for example in thermal imaging cameras, night vision devices, and infrared sensors. Due to its high transparency to infrared radiation, the material is particularly suitable for optical lenses and windows in such devices.

In the solar industry, germanium is used in high-performance solar cells, particularly in multi-junction solar cells for satellite and aerospace applications. These solar cells are characterized by very high efficiency and play an important role in energy supply in space.

Germanium (CAS No. 7440-56-4) is a versatile and strategically important raw material for numerous high-tech applications. Its semiconducting properties, infrared transparency, and chemical stability make it an indispensable material in electronics, telecommunications, optics, and energy technology. With increasing digitalization and the expansion of modern communication technologies, the importance of germanium will continue to grow in the future.