MCQ
In $p-$type semiconductors, holes are:
- ✓Majority carriers
- BMinority carriers
- CAbsent
- DNone of the above
✓
Answer
Correct option: A.
Majority carriers
$P-$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 $4^{th}$ 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.
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