Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Mobility of electrons

  1. Mar 2, 2008 #1
    why the mobility of electrons more than holes despite the fact that electrons have larger effective mass than holes.
  2. jcsd
  3. Mar 2, 2008 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    What system are you talking about? In Si and GaAs, the (transport) effective mass of electrons is smaller than that of holes.

    Note: In general, the transport effective mass will differ from the DOS effective mass, particularly if the valley degeneracy is not 1 or if there is a large anisotropy in the structure.
  4. Mar 4, 2008 #3
    I am talking about DOS effective mass.....
  5. Jun 20, 2011 #4
    did anyone ever answer this question about the mobility of the electrons?
  6. Jun 20, 2011 #5


    User Avatar

    Staff: Mentor

    Don't the electrons have to move in order for holes to move? How else do you get holes?
  7. Jul 19, 2011 #6


    User Avatar

    Staff: Mentor

    Please pay attention to the dates of the posts, your last post was in a 6 year old thread, this one is 4 years old.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Mobility of electrons