The correct option is (b) Holes are the majority carriers and trivalent atoms are the dopants.
In a p-type semiconductor hole are the majority carriers and electrons are the minority carriers. It is obtained by using a trivalent dopant.
- When the trivalent impurity is added to an intrinsic or pure semiconductor (silicon or germanium), it is a p-type semiconductor.
- Trivalent impurity like Al, Ga, In etc., are added.
- The hole density is much greater than the electron density.
- The impurity added in p-type semiconductor provides extra holes known as Acceptor atom.
