nature
Monocrystalline silicon has the physical properties of metalloid and weak conductivity, and its conductivity increases with the increase of temperature. It has remarkable semiconductivity. Ultrapure monocrystalline silicon is an intrinsic semiconductor. Doping trace amounts of group Ⅲ A elements, such as boron, into ultra-pure single crystal silicon can improve its conductivity and form a P-type silicon semiconductor. If a small amount of ⅴ A group elements, such as phosphorus or arsenic, are added, the conductivity can also be improved and N-type silicon semiconductors can be formed.
Monocrystalline silicon usually refers to a substance formed by the arrangement of silicon atoms.
The conductivity of semiconductor is between conductor and insulator. Silicon, germanium, gallium arsenide and cadmium sulfide are all semiconductor materials. The resistivity of semiconductor materials decreases with the increase of temperature and radiation intensity. Adding trace impurities to semiconductors has a decisive influence on their conductivity, which is an important characteristic of semiconductor materials. Silicon is the most common and widely used semiconductor material. When the molten elemental silicon solidifies, the silicon atoms are arranged in the diamond lattice to form a crystal nucleus, and the crystal nucleus grows into grains with the same crystal plane orientation to form single crystal silicon.
As a relatively active nonmetallic crystal, monocrystalline silicon is an important part of crystal materials and is at the forefront of the development of new materials. The manufacture of monocrystalline silicon material goes through the following processes: quartz sand-metallurgical grade silicon-purification and refining-polycrystalline silicon ingot deposition-monocrystalline silicon-silicon wafer cutting. Its main uses are as semiconductor materials and solar photovoltaic power generation, heating and so on.