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Whenever a impurity is added to the semicondutor i.e. silicon or Ge

  1. Sep 18, 2010 #1
    whenever a impurity is added to the semicondutor i.e. silicon or Ge ,why the impurity is chosen from group 13 and 15?why not from group 17 or 12 from periodic table?
     
  2. jcsd
  3. Sep 18, 2010 #2
    Re: semiconductor

    My guess is that it's more based on electrical properties of a particular substance rather than bonding properties or physical properties... and group 17 might bond too readily. But I'm certainly no expert
     
  4. Sep 18, 2010 #3
    Re: semiconductor

    Look at the crystal structure of the host matrix and then look for atoms that will fit.
     
  5. Sep 18, 2010 #4
    Re: semiconductor

    now that you say that I remember having read it somewhere
     
  6. Sep 18, 2010 #5

    dlgoff

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    Last edited by a moderator: May 4, 2017
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