Energy band diagram, Electrical Engineering

Sketch the Fermi-Dirac distribution function, F(E), alongside the energy band diagram for an n-type semiconductor, indicating the position of the Fermi level, EF, and the donor levels.  
Sketch the energy band diagram for a metal, indicating the position of the Fermi level.
At a temperature of 300 K silicon has an energy gap of 1.1 eV. Calculate the probability that a particular electron energy state at the bottom of the conduction band for intrinsic silicon is occupied at 300 K. 

Use the expression for F(E) on the formula sheet to derive the probability that, for this semiconductor, 

i)  a state at the bottom of the conduction band is occupied at 0 K

ii)  a state at the top of the valence band is occupied at 0 K. 

Explain how the values you obtain can be deduced from physical considerations alone.

Posted Date: 2/27/2013 1:55:30 AM | Location : United States

Related Discussions:- Energy band diagram, Assignment Help, Ask Question on Energy band diagram, Get Answer, Expert's Help, Energy band diagram Discussions

Write discussion on Energy band diagram
Your posts are moderated
Related Questions
1. A current carrying conductor is found to carry 10 μA at a given time slot from 5μs to 1.5 ms. Find the total number of electrons flowing in the conductor during this time slot.

Determine the total energy loss: Two capacitors C 1 = 50 μF and C 2 = 100 μF are connected in parallel across 250 V supply. Determine the total energy loss. Figure

(a) Consider the following transmission line with the reactance X1 placed across the input. It is being driven with a frequency ω such that the length of the line is λ/4. W

(a) Estimate the hysteresis loss at 60 Hz for a toroidal (doughnut-shaped) core of 300-mm mean diameter and a square cross section of 50mmby 50mm. The symmetrical hysteresis loop f

A heater element is made of nichrome wire having resistivity equal to 100 × 10 -8 ohm-m. The diameter of the wire is 0.4mm. Calculate the length of the wire required to get a resi

Electronic voltage regulators: Electronic voltage regulators operate through comparing the actual output voltage to a few internal fixed reference voltages. Any type of differ

how to be prepare for gate....