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Finding series and shunt resistance of solar cell

  1. Oct 4, 2016 #1
    Hi,
    I am trying to find out series and shunt resistance of solar cell from I-V curve which starts from Isc and going to Voc.

    I read some papers and for single illumination mostly said Rs= -(dv/dI)V=Voc
    and Rsh= -(dv/dI)I=Isc.
    so I am finidng Rs from slope between points from Vmax to Voc, and Rsh from Isc to Vmax.
    Am I doing something wrong? My series resistance is coming very high around 11k ohm.
     
  2. jcsd
  3. Oct 5, 2016 #2

    NascentOxygen

    User Avatar

    Staff: Mentor

    Aren't Vmax and Voc going to be the same point??

    Seems to me if you need the slope around Voc then you draw a tangent there.
     
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