temperature
Conductivity is highly correlated with temperature. The conductivity of metals decreases with increasing temperature. The conductivity of semiconductors increases with temperature. Within a temperature range, conductivity can be approximated as proportional to temperature. In order to compare the conductivity of substances at different temperature conditions, a common reference temperature must be set. The correlation between conductivity and temperature can often be expressed as the slope of the conductivity versus temperature curve.
Doping degree
The doping level of solid-state semiconductors can cause significant changes in conductivity. Increasing the doping level will result in an increase in conductivity. The conductivity of an aqueous solution depends on the concentration of solute salts or other chemical impurities that can decompose into electrolytes. The conductivity of water samples is an important indicator for measuring the salt content, ion content, impurity content, and other components of water. The purer the water, the lower the conductivity (higher resistivity). The conductivity of water is often recorded as the electrical conductivity coefficient; The electrical conductivity is the electrical conductivity of water at a temperature of 25 ° C.