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

Effect of temperature on voltage

  1. Oct 31, 2008 #1
    Hi,

    I know that voltage decreases with temperature but why?

    I am looking into silicon solar cells but cannot find any sources which explain why open circuit voltage decreases with rise in temperature.

    can some explain please!

    thanks
     
  2. jcsd
  3. Oct 31, 2008 #2
    I cannot give you a rigorous explanation, but I think (but I'm not totally sure) that the increase of temperature causes the increase of the electrons' kinetic energy. That's why the scattering events between electrons and the lattice occur more frequently: this fact decrease the current, and so the voltage.
     
  4. Nov 5, 2008 #3
    For a short discussion you can refer to Electrical Riddle No.26 from http://electrical-riddles.com :smile:
     
  5. Nov 12, 2008 #4
    Please refer to my contribution in another discussion. The knee voltage of the diode decreases with temperature.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?