Bismuth Selenide powder is an important functional material with unique physicochemical properties and a wide range of applications.
Basic Information:
Chemical formula: Bi₂Se₃, indicating that it is composed of two elements, bismuth (Bi) and selenium (Se), in the ratio of 2:3.
Crystal structure: It belongs to hexagonal crystal system, and its atomic arrangement is composed of five layers of atoms connected by covalent bonds, and the atomic layers are arranged according to the combination of Se-Bi-Se-Bi-Se.
Appearance: usually a grey or black powder.
Density: Theoretical density is about 7.18 g/cm³.
Melting point: The melting point is relatively high, about 710℃.
Chemical properties:
Stability: it is relatively stable at room temperature and pressure, but may undergo chemical reactions in extreme chemical environments such as strong acids and bases.
Oxidising and reducing properties: the bismuth and selenium elements in it have certain redox activity and can participate in some redox reactions. For example, suitable reducing agents and reaction conditions are needed to synthesise Bi₂Se₃ powder in the preparation process.
Application areas:
Thermoelectric field: Bismuth Selenide is an excellent thermoelectric material with high thermoelectric optimum value, which can be used to convert heat energy into electricity, and has potential applications in thermoelectric generators, thermoelectric refrigeration and other fields.
Electronics field: due to its topological insulating properties, Bi₂Se₃ is of great significance in the research and development of new electronic devices, such as topological transistors and spintronic devices.
Optical field: It can be used to prepare optical devices, such as infrared detectors, light modulators, etc., and has certain application potential in the field of infrared optics.
Sensor field: Using its sensitivity to certain gases or substances, it can be used to prepare gas sensors, biosensors and so on.
VI HALBLEITERMATERIAL GmbH (VIMATERIAL) employs a stringent quality assurance system to ensure the reliability of our product quality. Strict quality control is implemented throughout the entire production chain, and for defective products, we strictly enforce the principle of rework and redo. Each batch is released only after passing detailed specification tests.
Every batch of our materials is independently tested, and, if necessary, we send samples to certified companies for testing. We provide these documents and analysis certificates with the shipment to certify that our products meet the required standards.
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