Which type of impurity is to be added to a pu | vedclass

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(C) The correct answer is $C$. Indium.To obtain a $p$-type semiconductor,a trivalent impurity (an element from group $13$ of the periodic table) must

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Indium

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(C) The correct answer is $C$. Indium.To obtain a $p$-type semiconductor,a trivalent impurity (an element from group $13$ of the periodic table) must be added to a pure (intrinsic) semiconductor like Silicon or Germanium.Trivalent impurities include Boron $(B)$,Gallium $(Ga)$,Indium $(In)$,and Aluminium $(Al)$.Antimony $(Sb)$,Arsenic $(As)$,and Phosphorus $(P)$ are pentavalent impurities,which are used to create $n$-type semiconductors.

Which type of impurity is to be added to a pure semiconductor to get a $p$-type semiconductor?

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