(a) What is the physical significance of the Fermi-Dirac function? Explain how the Fermi level changes in the intrinsic semiconductor as a function of effective mass of electrons and holes for T > 0K. (CO-3) (b) Find the conductivity of intrinsic silicon at room temperature. It is given that n; at room temperature for silicon is 1.5 x 1016 /m³ and the mobilities of electrons and holes in silicon are 0.13 m²/V sec and 0.05 m²/V sec, respectively. (CO-3) 5.
(a) What is the physical significance of the Fermi-Dirac function? Explain how the Fermi level changes in the intrinsic semiconductor as a function of effective mass of electrons and holes for T > 0K. (CO-3) (b) Find the conductivity of intrinsic silicon at room temperature. It is given that n; at room temperature for silicon is 1.5 x 1016 /m³ and the mobilities of electrons and holes in silicon are 0.13 m²/V sec and 0.05 m²/V sec, respectively. (CO-3) 5.
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Transcribed Image Text:5. (a) What is the physical significance of the Fermi-Dirac function? Explain how the Fermi
level changes in the intrinsic semiconductor as a function of effective mass of electrons
and holes for T > 0K. (CO-3)
(b) Find the conductivity of intrinsic silicon at room temperature. It is given that ni at
room temperature for silicon is 1.5 x 1016 /m³ and the mobilities of electrons and holes
in silicon are 0.13 m²/V sec and 0.05 m²/V sec, respectively. (CO-3)
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