Definition of impurity semiconductor
Incorporation of certain trace elements as impurities in intrinsic semiconductors can significantly change the conductivity of semiconductors. The impurities incorporated are mainly trivalent or pentavalent elements. Intrinsic semiconductors doped with impurities are called impurity semiconductors. In the preparation of impurity semiconductors, intrinsic semiconductors are generally doped in proportions of one-millionth of an order. Also called doped semiconductor.