Bismuth Telluride (Bi2Te3) is a compound that plays a crucial role in various advanced technological applications, from thermoelectric devices to emerging areas in condensed matter physics. Understanding its fundamental chemistry and properties is essential for researchers, engineers, and procurement specialists who work with this material. As a dedicated manufacturer and supplier of high-purity inorganic chemicals, we offer a comprehensive overview of Bismuth Telluride (CAS 1304-82-1) to facilitate informed decision-making.

Chemical Composition and Structure

Bismuth Telluride is an intermetallic compound formed by the elements Bismuth (Bi) and Tellurium (Te). Its chemical formula is Bi2Te3, indicating a stoichiometric ratio of two bismuth atoms to three tellurium atoms. It crystallizes in a rhombohedral structure, specifically within the trigonal crystal system. This layered structure is fundamental to many of its properties, including its anisotropic electrical and thermal conductivity, and its ability to be easily cleaved. While pure Bismuth Telluride has specific properties, it is often alloyed with elements like Antimony (Sb) and Selenium (Se) to tune its thermoelectric figure of merit (ZT), creating p-type (Bi,Sb)2Te3 and n-type Bi2(Te,Se)3 alloys, respectively.

Physical and Thermoelectric Properties

Pure Bismuth Telluride typically appears as a grey powder or crystalline solid. It has a relatively high melting point of approximately 585 °C. Its most significant characteristic for technological applications is its excellent thermoelectric performance at or near room temperature. This means it has a good balance of a high Seebeck coefficient, high electrical conductivity, and low thermal conductivity. These properties make it highly efficient for converting heat energy directly into electrical energy, or vice-versa, underpinning its use in thermoelectric generators and coolers. Its semiconductor nature also makes it valuable in other electronic applications.

Applications and Sourcing Considerations

The primary applications of Bismuth Telluride include thermoelectric power generation (utilizing waste heat) and solid-state refrigeration. Its use as a topological insulator is also a rapidly growing area of research. When considering to buy Bismuth Telluride, it is vital to source from a reputable manufacturer. Factors like purity, consistency, and the availability of specific alloy compositions are critical. As a leading supplier in China, we ensure that our Bismuth Telluride products meet rigorous quality standards. We encourage prospective clients to get a quote and consult with our technical team to determine the most suitable grade for their specific needs. Understanding the prevailing bismuth telluride price will also aid in your procurement planning.

By understanding the fundamental chemistry and properties of Bismuth Telluride, users can better leverage its capabilities for innovation. We are committed to providing the high-quality materials necessary to drive advancements in thermoelectric and electronic technologies.