crystal silicon
Crystalline silicon, or crystalline silicon, is a semiconductor material with important applications, the Crystal structure: The structure of crystalline silicon is similar to that of diamond, with a face-centered cubic lattice, in which each silicon atom forms a tetrahedral structure with four surrounding silicon atoms through covalent bonds. In this structure, silicon atoms are located at the apex and center of the crystal cell, forming a complex lattice that contains two sets of face-centered cubic lattices.
crystal silicon
The silicon cell is characterized by low space utilization (about 34%), which means that there are large voids within the crystal, which provide space for doping, a key property in semiconductor processing.
Electronic properties:
Each silicon atom has four electrons in its outermost layer, forming four covalent bonds to a steady state. In its pure state, silicon is poorly conductive, but its conductivity can be significantly altered by doping to form n-type or p-type semiconductors.
The conductivity of silicon increases at elevated temperatures, showing the typical thermally activated conductivity properties of semiconductors.
Physical Properties:
Silicon crystals are hard and brittle, with a metallic luster, a melting point of 1410°C, and a boiling point of 2355°C. The conductivity of silicon increases with temperature.
Conductivity increases with temperature, with the typical properties of semiconductors.
Monocrystalline silicon has good photoelectric conversion efficiency, is one of the main materials for solar cells.
