# p-type semiconductors see also: [[n-type semiconductors]] A p-type semiconductor is an intrinsic semiconductor that is doped with an element from Group III. Silicon, from Group IV has four valence electrons that, when doped with an element from Group III like Boron (B) that has three valence electrons, will have a space in which there aren't sufficient electrons to form a proper bond, resulting in holes. When a voltage is applied in this state, the neighboring electrons will move to the hole, so that where an electron had moved from now creates a new hole. Think p-type has an excess of holes and thus a POSITIVE charge