Explanation

It refers to materials with resistivity between metal and insulator. According to their chemical composition, they can be divided into elemental semiconductors and compound semiconductors. Inorganic compound semiconductors can also be divided into binary, ternary, and multivariate semiconductors. The main properties and characterization parameters of materials mainly include: energy band structure, band gap, carrier mobility, excessive carrier lifetime, resistivity, conductive type, crystal orientation, defect category and density, etc. Different devices have different requirements for them. All semiconductor materials must have high background purity, so purification is required. The main industrial methods for preparing semiconductor single crystal include czochralski method and zone-melting method method. The single crystal can be sliced, polished and polished by adding T. Important semiconductor materials include silicon, germanium, gallium arsenide, indium phosphide, mercury cadmium telluride, etc. semiconductor materials are important basic materials for making transistors, integrated circuits, power electronic devices and optoelectronic devices.

Classification