Energy band diagram, Electrical Engineering

Assignment Help:

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.


Related Discussions:- Energy band diagram

Explain function of application layer, Q. Explain function of application l...

Q. Explain function of application layer? Layers of OSI model are as follows: (1) The Physical Layer: This defines an interface in terms of connections, voltage levels and

Magnetic Circuits:, A circular ring of magnetic material has a mean length ...

A circular ring of magnetic material has a mean length of 1m and a cross sectional area of .001m^2.A sawcut of 5mm width is made in the ring . calculate the magnetizing current req

Show that any periodic signal is not typically energy type, (a) Evaluate wh...

(a) Evaluate whether the sinusoidal signal x(t) = A cos (2πf 0 t + θ) is an energy-type or a power-type signal. (b) Show that any periodic signal is not typically energy type, a

Calculate the iron loss, Q. The efficiency of a 400-kVA, single-phase, 60-H...

Q. The efficiency of a 400-kVA, single-phase, 60-Hz transformer is 98.77% when delivering full-load current at 0.8 power factor, and 99.13%with half rated current at unity power fa

Determine the voltage across resistor, Determine the voltage across the 20-...

Determine the voltage across the 20- resistor in the following circuit of Figure (a) with the application of superposition.

Electromechanical and electronic switching system, Q. Compare electromechan...

Q. Compare electromechanical switching system with electronic switching system. Sr. No Electromechanical switching System Electroni

One byte instructions , One byte Instructions One byte  instruction i...

One byte Instructions One byte  instruction include  both the opcode  operand in the  same byte. To identify  one byte  instruction one  must  observe followings  things .

Convolution, how to use tabular method to solve convolution problems

how to use tabular method to solve convolution problems

Explain common emitter configuration, Q. Explain Common emitter configurati...

Q. Explain Common emitter configuration? Common emitter configuration: In this circuit the emitter is common to both input and the output.Such a configuration is also known as

Analog Fundamentals, Module 1 Discussion: Application of operational Amplif...

Module 1 Discussion: Application of operational Amplifier

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd