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Question: Answered & Verified by Expert
If $n_e$ and $n_n$ are the number of electrons and holes in a semiconductor heavily doped with phosphorus, then
PhysicsSemiconductorsJEE Main
Options:
  • A $n_e \gg n_n$
  • B $n_e \ll n_h$
  • C $n_e \leq n_h$
  • D $n_e=n_h$
Solution:
2471 Upvotes Verified Answer
The correct answer is: $n_e \gg n_n$
Phosphorus is a pentavalent impurity so if $n_e$ and $n_h$
are the number of electrons and holes in a semiconductor heavily doped with phosphorus, then
$n_e \gg n_h$

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