Question

What is p-type semiconductor? What are the majority and minority charge carries in it?

Answer 1

To make $extrinsic$ semiconductors, when the impurity to be $doped$ with $intrinsic$ semiconductor is $trivalent$

then the made semiconductor is called $p-type$ semiconductor.

Boron and aluminum are some examples of $trivalent$ impurity.

When we add $trivalent$ impurity to $intrinsic$ semiconductor, it creates $deficiency$ of valence electrons thus result in

$creation$ of $holes$ which are treated as $POSITIVE$ charge carriers that is why called as $p-type$ semiconductor.

So $hole$ are $majority$ charge carriers and electrons as $minority$ charge carriers due to their $deficiency.$