Question

When a pentavalent impurity is added in $Ge$ crystal then, what type of semiconductor is obtained ?

• A. A $p$-type
• B. An $n$-type
• C. Intrinsic
• D. None of these

Answer 1

Answer: (B)

n-type semiconductor is obtained when Si or Ge (tetravalent) is doped with pentavalent inpurities like As, Sb, P, etc