7440-55-3

CAS Nr.:

7440-55-3

Gallium

EINECS Name:

Gallium

231-163-8

EINECS Nr.:

231-163-8

Gallium

Synonym:

Gallium

Gallium – High-Purity Raw Material for Modern High-Tech Applications. Gallium plays a central role in numerous high-tech industries. Due to its unique physical and chemical properties, gallium is primarily used in the electronics, semiconductor, and optoelectronics industries. The raw material is becoming increasingly important as modern technologies such as LEDs, solar cells, and high-frequency components rely on gallium-based materials.

Physical Properties of Gallium

Gallium is a silvery, shiny metal with a relatively low melting point of approximately 29.8 °C, which means it can melt in the palm of the hand. It has a molar mass of 69.72 g/mol and a density of about 5.91 g/cm³. In its solid state, gallium is brittle, while in its liquid form it exhibits high surface tension and good wetting properties. Furthermore, gallium is characterized by high purity and stability and reacts only slowly with oxygen at room temperature. These properties make gallium an ideal material for demanding industrial applications.

Examples of Applications of Gallium

One of the most important applications of gallium is the production of semiconductor materials such as gallium arsenide (GaAs) and gallium nitride (GaN). These materials are used in high-performance semiconductors, microchips, transistors, and integrated circuits. They offer excellent electrical properties and enable particularly fast electronic components.

Gallium is a key component in the production of LEDs (light-emitting diodes), laser diodes, and optoelectronic devices. Compounds such as gallium nitride enable efficient light emission and are used in modern lighting systems, displays, and communication technologies.

In the solar industry, gallium is combined with other elements to manufacture high-performance solar cells, for example in CIGS solar cells (copper-indium-gallium-diselenide). These technologies enable particularly high energy efficiency and are used in modern photovoltaic systems.

Gallium is also used in the production of special metal alloys applied in thermometers, cooling media, and heat-transfer systems. Due to its low melting point and good thermal conductivity, gallium is particularly suitable for applications in thermal management.

Gallium is a strategically important raw material for numerous high-tech applications. Its unique physical properties make it an indispensable material in the semiconductor industry, optoelectronics, photovoltaics, and special alloys. With increasing digitalization and the expansion of modern energy technologies, the importance of gallium will continue to grow in the future.