P-type semiconductors have a higher hole concentration than electron concentration than n-type semiconductors. The word p-type indicates the hole’s positive charge. The majority carriers in p-type semiconductors are holes, while the minority carriers are electrons. The addition of trivalent impurities like boron, aluminum, or gallium to an inherent semiconductor results in valence electron deficits, which are referred to as “holes.”
Final Answer:
Hence, P-type of semi – conductor is formed when a trivalent impurity is dopped in a pure semiconductor.