1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Intrinsic semiconductors

  1. Jan 4, 2009 #1
    A semiconductor material has an intrinsic carrier concentration of 5.6 x 10^14 m^-3 at 300K.
    What is the electron concentration when such a semiconductor is p doped with an acceptor concentration Na = 3.9 x 10^18 m-3.

    I have no idea how to approach this question without a value for the energy band gap. Could someone point me in the right direction? Thanks.
  2. jcsd
  3. Jan 4, 2009 #2


    User Avatar
    Homework Helper

    Why do you need the value of Eg for this question? You only need a simple equation for this question.
  4. Jan 5, 2009 #3
    Thanks for the boost in confidence, I've worked it out now anyway.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook