Bismuth (III) Telluride

Bi₂Te₃ particles are an important functional material with unique physicochemical properties and a wide range of applications.

Basic Information:

Chemical composition: It is composed of two elements, bismuth (Bi) and tellurium (Te), in the ratio of 2:3.
Crystal structure: It belongs to the tripartite crystal system and has a layered structure, which makes Bi₂Te₃ particles have anisotropic physical properties in some directions.
Molecular weight: about 800.76.
Appearance: usually grey powdery particles.
Density: Relatively high, approximately 7.642 g/cm³.
Melting point: Relatively low, approximately 585°C.

Chemical Properties:

Stability: it is more stable at room temperature and pressure, but in some specific chemical environments, such as strong acids and bases, chemical reactions may occur.

Redox property: the bismuth and tellurium elements in it have certain redox activity and can participate in some redox reactions.

Application areas:

Thermoelectric field: Bismuth Telluride particles are currently one of the best performing thermoelectric materials near room temperature, and can be used to make thermoelectric power generators and electronic refrigeration devices.

Optical field: Due to the wide range of response to light, from ultraviolet to far-infrared, Bi₂Te₃ particles can be used to make photodetectors, which are widely used in the fields of flame detection, spectral analysis and astronomical observation.

Topological insulator field: Bismuth Telluride is a typical representative of topological insulators, which is insulating on the inside and metallically conductive on the surface, a property that makes it potentially useful in quantum computing and high-performance electronic devices.