Holes. Evaluation of the
product of state density dependent on the
effective mass m*, volume V. And
the Fermi distribution function f, dependent on the
parameter mu. f replaced by approximate expression, close to the
Boltzmann factor due to the large value of the gap
as compared to the value of kT.
The valence band maximum EV.
Substitution variable x2.
Small drawing of the missing electrons.
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