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Smiles (derailed)
Lv 4
Smiles (derailed) asked in Science & MathematicsPhysics · 7 years ago

In which band does the fermi level of a solid exist?

Some books say it's the valence band, and some say it's the conduction band. (I do know that the fermi level is the highest energy level which an electron can occupy at the absolute zero temperature, I just want to know where it's found).

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  • Steve4Physics
    Lv 7
    7 years ago
    Favorite Answer

    For a metal, the valence and conduction bands overlap. The Fermi level is at the top of overlapping region (top of the valence band).

    For semiconductors and insulators, the Fermi level is in the gap between the valance and conduction bands.

  • Michelle
    Lv 6
    7 years ago

    Wherever the highest level is. That depends on the material.

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