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    Definition of semiconductor




    Semiconductor refers to the material with conductivity between conductor and insulator at room temperature. Semiconductors are widely used in consumer electronics, communication systems, medical instruments and other fields. For example, diodes are devices made of semiconductors. No matter from the perspective of science and technology or economic development, the importance of semiconductor is very huge. Most of today's electronic products, such as computers, mobile phones or digital recorders, have a very close relationship between the core units and semiconductors. Common semiconductor materials include silicon, germanium, gallium arsenide, etc., and silicon is one of the most influential semiconductor materials in commercial applications.
    There are many forms of matter, such as solid, liquid, gas, plasma and so on. We usually call the materials with poor conductivity, such as coal, artificial crystal, amber, ceramics and so on, as insulators. The metal with good conductivity, such as gold, silver, copper, iron, tin and aluminum, is called conductor. The material between conductor and insulator can be simply called semiconductor. Compared with conductor and insulator, the discovery of semiconductor materials is the latest. Until 1930s, when the purification technology of materials was improved, the existence of semiconductor was really recognized by the academic community.
    Semiconductors are materials whose conductivity is between conductor and insulator at room temperature. Semiconductor is mainly used in radio, television and temperature measurement. Semiconductor is a kind of material with controllable conductivity, ranging from insulator to conductor. From the perspective of science and technology and economic development, semiconductor affects people's daily work and life, until 1930s, this material was recognized by the academic community.



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