1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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!

Intrinsic and extrinsic silicon semiconductors

  1. Mar 7, 2010 #1
    Can some1 please assist me with this question,i have tried every means possible with no avail.
    A wafer of intrinsic silicon is deliberately doped with 3 X 10^20/m^-3 of acceptor atoms
    1, CAlculate the electron and hole concntration in the wafer
    2,calc the position of the Fermi level in the band-gap
    3calculate the conductivity of the wafer

    q = 1.6 X 10^-19C,k = 1.38 X 10^-23J/K = 8.6 X 10^-5eV/K,ni = 1.45 X 10^16m-3,Nc= 2.5 X 10^25m^-3,EG(Si)= 1.1eV....
    Thanks a lot in advance for your assiatance

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Mar 7, 2010 #2
    You need to attempt a solution before anyone can help you. And please show your work.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook