Question

In an n-type silicon, which of the following statement is true: (a) Electrons are majority carriers and trivalent atoms are the dopants. (b) Electrons are minority carriers and pentavalent atoms are the dopants. (c) Holes are minority carriers and pentavalent atoms are the dopants. (d) Holes are majority carriers and trivalent atoms are the dopants.

Answer 1

An n-type semiconductor is formed when pentavalent impurities such as phosphorus, arsenic, antimony, or bismuth are doped in silicon atoms and these pentavalent impurities are known as dopants.

In an n-type semiconductor, the holes are the minority charge carriers and electrons are the majority charge carriers.

Hence, the correct statement is (c).