The probability that an electron is in an excited state is given:(adsbygoogle = window.adsbygoogle || []).push({});

P = e^-(energy difference)/kt

and the probability that an energy level is occupied in semi conductors is:

p = 1/ (e^(E-Ef)kt + 1)

I know both are related to fermi-dirac statistics, which one is the appropraite one to use?

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# Probability that energy level is occupied

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