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Β on NPN bipolar transistor

  1. Nov 2, 2009 #1
    If we make an NPN transistor and change the base doping level so that we get a higher consentration of holes will β increase or decrease? Why?

    I know β=IC/IB. Will more holes in the base make more electrons pass from the emitter to the collector increasing IC and thereby β? Or will IB increase propertionally so that β remains the same? What do you think?
     
  2. jcsd
  3. Nov 2, 2009 #2
    Bump. Urgent!
     
  4. Nov 30, 2010 #3
    More hole density in an npn base results in a decrease in beta.

    Claude
     
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