What’s the Bismuth Telluride property?
Bismuth-teuride This is a gray-colored powder with the molecular formula Bi2Te3. Bismuth Telluride is an indirect band gap semiconductor that has a bandgap at room temperature 0.145eV and electron and hole mobilitys 0.135 and (V*s), respectively. It also has a thermoelectric quality coefficient 1.6×10-3/K.Bismuth Telluride has an average density of 7.8587g/cm3 with a melting point at 585degC. It has covalent bonds that are bound and a specific ionic structure. Bismuth Telluride exhibits the characteristics of being a topological insulator. This allows electrons flow without restriction on its surface and does not lose any energy.
Methods for the preparation of bismuth informuride include zone smelting, Bridgman and Czochralski. Bismuth Telluride is a semiconductor substance that has high electrical conductivity and low thermal conductivity.
What’s the use of Bismuth telluride?
High-performance thermoelectric semiconductors made from bismuth-telluride-based thermoelectric semiconductors can perform well in both the low and high temperature ranges. They can be used for precise temperature control and local refrigeration in areas such as microelectronics. There are good applications for them in thermoelectric power generation and industrial waste heat recuperation.To increase the thermal conductivity, phonon scattering can by enhanced through alloying. Additionally, it is possible to optimize the carrier concentration to enhance the electrical performance. This will improve the thermoelectric performance for the bismuth Telluride-based material.
Bismuth Telluride poses a low risk, but can prove fatal when taken in large quantities. The material is able to allow electrons on its surface to move at room temperatures without energy consumption. This will increase chip’s operating speed, and can even greatly improve computer chips’ work efficiency.
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