These holes are
in addition to the intrinsically generated holes while the source
of conduction electrons is only intrinsic generation Thus, for
such a material, the holes are the majority carriers and electrons
are minority carriers Therefore, extrinsic semiconductors doped
with trivalent impurity are called p-type semiconductors For
p-type semiconductors, the recombination process will reduce
the number (ni)of intrinsically generated electrons to ne