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Zener tunneling

  1. Oct 23, 2007 #1
    in zener tunneling phenomena, are the carriers locally generated or non-locally generated?
    i.e, should we assume the process as though it were generation of holes in the valence band and electrons in the conduction band?
    i hope someone could shed some physics on this concept.
  2. jcsd
  3. Oct 24, 2007 #2


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    Actually, it's almost the other way round. Look at a tunnel-diode at small bias: The electrons from the conduction band of the n-type region tunnel across the junction, into the empty states in the valence band of the p-type region (remember, in a tunnel-diode, the Fermi energy does not lie within the band-gap).
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