Astronuc said:Please read one's textbook.
Intrinsic semiconductor is undoped.
The electrical conductivity is the inverse of the resistivity: [itex]\sigma[/itex] = 1/[itex]\rho[/itex].
Read this page - http://www.virginia.edu/bohr/mse209/chapter19.htm
The resistivity of silicon is approximately 2.3 x 10^-3 ohm-meters at room temperature.
Silicon has a higher resistivity than most metals, but is lower than most insulators. This makes it a semiconductor, which is a material with electrical conductivity between a conductor and an insulator.
The resistivity of silicon is affected by temperature, doping levels, and impurities. Higher temperatures, higher doping levels, and more impurities generally result in higher resistivity.
Silicon is commonly used in electronics because of its semiconducting properties. It can be doped to create p-type and n-type regions, allowing for the creation of diodes, transistors, and other electronic components.
The resistivity of silicon can be measured using a four-point probe method, which involves passing a known current through the material and measuring the voltage drop across four points. The resistivity can then be calculated using the dimensions of the sample and the measured values.