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In an intrinsic semiconductor, if the energy gap is 0.7 eV, the Fermi level will have an energy of

Question and options

In an intrinsic semiconductor, if the energy gap is 0.7 eV, the Fermi level will have an energy of
  1. 1.4 eV
  2. 1.1 eV
  3. 0.35 eV
  4. 0.1 eV

Answer and explanation

Correct answer: C - 0.35 eV
In an intrinsic semiconductor the Fermi level lies roughly midway in the gap: Eg/2=0.7/2=0.35E_g/2 = 0.7/2 = 0.35 eV measured from the top of the valence band.

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