Semiconductor Electronic: Material, Devices And Simple Circuits — Physics STD 12 Science — Question

1. Majority carriers

Explanation:

P-type semiconductors are those which have a p-type impurity. A p-type impurity is a material in which the atoms have only 3 Valence Electrons. When they are added to a pure semiconductor, each atom gets bonded with 3 of atoms of the semiconductor. Between the 4th atom of the semiconductor and the atom of the impurity, there is an empty space due to lack of an electron. This empty space is known as a hole. Because of a large existence of P-type material in a p-type semiconductor, it has more holes as compared to free electrons. Hence holes are majority carriers.