When impurity (atom) is added to an intrinsic semiconductor , then it becomes extrinsic semiconductors .
What is the above process called ?
b. What is the advantage of doing so ?
c. Distinguish between intrinsic semiconductor and extrinsic semiconductor.

Explanation

a . Doping
b. It increases the conductivity of semiconductor .
c. Semiconductor (original) without impurity is called intrinsic and the one doped is called extrinsic semiconductors.