1. Not finding help here? Sign up for a free 30min 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!

Lab - Resistivity of Ge

  1. Jun 13, 2009 #1

    CNX

    User Avatar

    Resistivity of Ge

    I'm doing this lab and haven't taken any SS physics so I'm expected to pick up some of the theory on my own.

    I am having trouble explaining the resistance vs temperature curve for n-type and p-type Germanium, i.e. why does resistance increase and then drop from around 290 K to 400 K?

    Does the relation between resistivity and resistance, [itex]\rho = R \frac{A}{l}[/itex] still hold for a semiconductor at any temperature?

    My intuition wants to say the increased thermal energy of electrons in the conduction band increases resistance from 290 K to the peak, but eventually electrons in the valence band have enough energy to jump the band gap therefore resistance begins to decrease. And I'm not sure about n-type vs p-type here.
     
    Last edited: Jun 13, 2009
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?



Similar Discussions: Lab - Resistivity of Ge
  1. Bottle rocket lab. (Replies: 0)

  2. Contact Resistance (Replies: 0)

Loading...