Position of Fermi Energy Level MCQ Quiz in मराठी - Objective Question with Answer for Position of Fermi Energy Level - मोफत PDF डाउनलोड करा
Last updated on Mar 19, 2025
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Position of Fermi Energy Level Question 1:
If the effective carrier masses are not equal, then the intrinsic fermi level does not lie at the center of the bandgap. The effective carrier masses in silicon are in the ratio (mp*/mn*) = 2.72. The position of Ei with respect to the midgap energy level is:
Answer (Detailed Solution Below)
3kT/4
Position of Fermi Energy Level Question 1 Detailed Solution
Given, mp*/mn*= 2.72
EFi-Emidgap = ¾ kT ln(mp*/mn*) = ¾ kT ln(2.72) ~ 3KT/4
Position of Fermi Energy Level Question 2:
A P-channel MOS Capacitor is under sufficient positive bias at the beginning. Then the voltage is slowly decreased to a sufficient negative and the experiment ends. The order of the region in which the MOS Capacitor is from beginning to end is:
Answer (Detailed Solution Below)
Position of Fermi Energy Level Question 2 Detailed Solution
A p-channel MOSCAP is under accumulation when the gate voltage is positive.
Now as the voltage is decreased to negative the channel undergoes depletion, then weak inversion, and finally is under strong inversion for sufficient negative bias.