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    Pn junction characteristics: How were the lengths and minority carrier concentrations derived from the above information?

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    An example says,
    Na=10^18cm^-3
    Nd=10^16cm^-3
    Dp=10cm^2/s
    Dn=25cm^2/s
    tpo=10^-7s
    tno=10^-7s

    "We can then calculate the following parameters:"

    Lp=1.0x10^-3cm
    Ln=1.58X10^-3cm
    pno=2.25x10^4cm^-3
    npo=2.25x10^2cm^-3

    How were the lengths and minority carrier concentrations derived from the above information? And mathematically what is Shottky barrier lowering?

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    https://brainmass.com/physics/energy/lengths-minority-carrier-concentrations-derived-11351

    Solution Preview

    Please see the attached file for a full derivation

    The Diffusion length (Ln or Lp) is related to the minority carrier lifetime (tn or tp) and the diffusion coefficient ...

    Solution Summary

    The solution provides good explanations and calculations used in solving the problem.

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