In p-type semiconductors,

Question

Quizplus · Accepted Answer

In p-type semiconductors, acceptor impurities such as Boron (B) or Aluminum (Al) are added to the pure semiconductor material, which contains four valence electrons. These acceptor impurities create a gap in the valence band, which acts as a positive charge carrier or "hole." These positively charged holes contribute to the increased electrical conductivity of the semiconductor. Therefore, option D is the best choice. Options A and C are incorrect as they are not relevant to the formation of p-type semiconductors. Option B is incorrect as both p and n orbitals contribute to the formation of the valence and conduction bands in semiconductors.

In P-Type Semiconductors