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The depletion voltage

  1. Mar 22, 2016 #1
    The electric field
    upload_2016-3-22_18-43-23.png .........(1)

    by saying that
    upload_2016-3-22_18-47-49.png .......(2)


    I tried to integrate equation (1) from r2 to r1 but could not get equation(2).

    Any suggesting.

    Thanks
     
  2. jcsd
  3. Mar 22, 2016 #2

    TSny

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    Looks like you should be able to get (2) from (1) with just algebraic manipulation. Did you try letting ##E = 0## in (1) when ##r = r_1##and then solving for ## V##?

    However, I get that (2) should have a positive sign for the last term.

    Can you define the symbols ##V_d## and ##V_o## that occur in (1) and (2)?
     
  4. Mar 23, 2016 #3
    Thanks for your prompt respond.

    Vo is the difference in potential across the junction
    Vd is the depletion voltage
    Also for equation (1) the second term has a positive sign.
    After doing some algebra i end up with equation (2).

    Thanks for the help.
     
    Last edited: Mar 23, 2016
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