Question

The conductivity of a semi conductor can be increased by:

• A. Heating the semi conductor
• B. Doping the semi conductor
• C. Both (a) and (b)
• D. None

Answer 1

The correct option is C Both (a) and (b)

The conductivity of a semi-conductor can be increased by releasing the electrons which are bounded by atoms initially by heating the semi-conductor.

The conductivity of semi-conductor can also be increased by adding the trivalent or pentavalent impurity in a semi-conductor which is called as doping in a semiconductor.