In an intrinsic semiconductor at thermal equilibrium, the electron concentration n and hole concentration p are related by?

  • An > p
  • Bn < p
  • Cn = p = ni
  • Dn + p = 0
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Correct Answer: C. n = p = ni
Explanation: In an intrinsic semiconductor, thermally generated electrons and holes occur in equal numbers, so n = p = ni.
Reference: Standard semiconductor electronics: intrinsic carrier concentration