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Bias voltage required to deplete silicon slab of electrons

  1. Oct 3, 2011 #1
    I'm having a play around with a simple radiation detector that has 2 electrodes with a slab of uniformly doped silicon in between.

    I'd like to know the bias voltage i would need to apply across the electrodes so that the silicon slab is just depleted of electrons (i.e so that positive charge is distributed though out the silicon dielectric) and I also need to know the capacitance of the detector at this voltage, but for that I think I can simply use C = q/v (not sure how to calculate charge here)

    I know the dimensions of the electrodes and thickness of silicon and I have a good approximation of the relative permittivity of the silicon dielectric.

    Any pointers would help a lot
  2. jcsd
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