Semiconductors and Band Theory

  1. I was taught this in school but my teacher could not explain why the band splits again with decreasing atomic distance. Also, then i wondered how do you explain the fact the it splits again nicely into 4N states for the valence band and 4N states for the conduction band? Could some one help?

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    Also, how would one redraw the above energy band diagram if the semiconductor was doped to become a n-type or a p-type?

    Hope someone could help! Thank You!
     
    Last edited: Aug 15, 2008
  2. jcsd
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