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where is fermi energy?

Discussion in 'Electronic Basics' started by PZ, Jan 26, 2006.

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  1. PZ

    PZ Guest

    "An n-type sample of silicon has a uniform density Nd= 10e16
    atomes cm(-3) of arsenic. Find out the temperature at which half the
    impurity atoms are ionized. Assume that all mobile electrons and holes
    come from dopant impurities".

    this is the question.

    I was told the fermi level is about Ed, which is 0.05 below Ec. why is
    fermy at Ed?

  2. Pooh Bear

    Pooh Bear Guest

    Homework was it ?

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