Which of the following dopants is used in ger | vedclass

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Question

(A) To form an $n-$type semiconductor,a pentavalent impurity (Group $15$ element) is added to a tetravalent semiconductor like germanium $(Ge)$.Among

Vedclass · Accepted Answer

$As$

Vedclass · Answer

(A) To form an $n-$type semiconductor,a pentavalent impurity (Group $15$ element) is added to a tetravalent semiconductor like germanium $(Ge)$.Among the given options,$As$ (Arsenic) is a Group $15$ element,while $B$ (Boron),$In$ (Indium),and $Ga$ (Gallium) are Group $13$ elements.Adding a Group $15$ element provides an extra electron,which is responsible for $n-$type conductivity.Therefore,$As$ is the correct dopant.

Which of the following dopants is used in germanium to form $n-$type semiconductor?

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