Question

Doping of silicon (Si) with indium (In) leads to the formation of

Hint:

Group 13 elements (like In, B) form p-type semiconductors when doped into Si; group 15 elements (like P, As) form n-type.

Answer 1

Indium (In) is a group 13 element and has 3 valence electrons, while silicon (Si) has 4.
When indium is doped into silicon, it creates holes (absence of electrons) because one valence bond remains unsatisfied.
These holes act as positive charge carriers, making the semiconductor a p-type.