[Wien] fermi energy at the bottom of conduction band

[=?iso-2022-jp?B?GyRCMiZaXxsoQg==?=]

Hi everyone:

  Recently I calculated bandstruct of a semiconductor, but unfortunately the
Fermi 

Energy is at the bottom of conduction band instead of at the top of valence
band, and 

Apparently there is a band gap between conduction band and valence band.
What on earth

does that mean? Could you please help me?

Thank you very much

 

Hao

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://zeus.theochem.tuwien.ac.at/pipermail/wien/attachments/20051010/c019797f/attachment.html