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Homework Help: Some basic semiconductor questions

  1. Jul 19, 2008 #1
    I've been doing some practice semicon. problems and there are a few remaining ones I've been having issues solving. I'll do one at a time

    Question: What happens when an n-type and p-type material are merged to form a p-n junction? Provide an explanation as to the amount of net current flow in a p-n junction under equilibrium.

    I know that under reverse-bias, there is minimal current flow to cross the p-n junction but what about under equilibrium? Also I know generally what happens in a p-n junction but cant specifically put to words what is occuring on a more exact level... any suggestions ?
  2. jcsd
  3. Jul 19, 2008 #2


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    Homework Helper

    What is the definition of "thermal equilibrium" in semiconductor physics? You need to explain what happens during the formation of a pn junction in terms of the hole/electron concentrations and the respective diffusion/drift currents.
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