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Fermi energy and quasi-Fermi energies in pn-junctions

  1. May 4, 2010 #1
    Hi,

    Considering a pn-junction at thermal equilibrium, why does following count

    EFp=EFn-eVd=EF,

    where EFp and EFn are the quasi-Fermi energies in the neutral p- and n-type regions before equilibrium is established, with EFn>EFp, EF is the Fermi energy after equilibrium is established, and Vd is the diffusion potential? What I do not get, is how EFp can be equal to EF.
     
  2. jcsd
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