A large number of semiconductors can be divided into element semiconductors and compound semiconductors according to chemical composition.
The two categories of the body. Germanium and silicon is the most commonly used semiconductor element; compound semiconductor includes Chapter III and Chapter V compound (gallium arsenide, gallium phosphide etc.), II and VI compounds (cadmium sulfide, zinc sulfide, etc.) oxide (manganese, chromium, iron, copper oxide), as well as by III-V compounds and II-VI compounds composed of solid solution (gallium aluminum arsenide, gallium arsenic phosphorus). In addition to the above crystalline semiconductors, there are amorphous glass semiconductors, organic semiconductors, and so on.
The classification of semiconductors can be divided into three categories: integrated circuit devices, discrete devices, photoelectric semiconductors, logic IC, analog IC, storage and so on. In addition, it is classified by application area and design method. Though not commonly used, it is classified according to IC, LSI, VLSI (super LSI) and its scale. In addition, in accordance with the signal processed, it can be divided into analog, digital, analog digital mixing and functional classification.