Question

How may the conductivity of an intrinsic semiconductor be increased?

Answer 1

Intrinsic semiconductors are the conductors with purely group 4 elements and have no impurities and so their conductivity is less than the extrinsic conductors. Generally conductivity of intrinsic conductors can be increased by increasing the temperature as the increase in temperature pushes a greater proportion of electrons from valence band to conduction band which increases the conductivity. The conductivity of an intrinsic semiconductor is increased by doping it with elements like arsenic and phosphorous.