Analysis of semiconductor devices, Electrical Engineering

Assignment Help:

Analysis of Semiconductor Devices

There are two complementary techniques of studying semiconductor devices:

  1. Via numerical simulation of the semiconductor equations.
  2. Via analytical solution of semiconductor equations.
  • There are a various range of techniques used for device simulation with some of them beginning from the drift diffusion formalism outlined earlier, where as others take a more fundamental approach beginning from the Boltzmann transport equation instead.
  • Generally, the numerical approach provides highly accurate results but needs heavy computational effort as well.
  • The output of device simulation in the type of numerical values for all internal variables needs comparatively larger effort to understand and extract significant relationships among the device characteristics.

 

The electrons in the valence band are not able of acquiring energy from external electric field and therefore do not contribute to the current. This band is not at all empty but may be partially or totally with electrons. On the contrary in the conduction band, electrons are seldom present. But it is probable for electrons to acquire energy from external field and thus the electrons in these bands contribute to the electric current. The forbidden energy gap is devoid of any of the electrons and this much energy is needed by electrons to jump from valence band to the conduction band.

Other words, in the case of conductors and semiconductors, like the temperature increases, the valence electrons in the valence energy move from the valence band to conductance band. Like the electron (negatively charged) jumps from valence band to conductance band, in the valence band there is a left out deficiency of electron that is called Hole (positively charged). Depending upon the value of Egap that is energy gap solids can be categorized as metals (conductors), insulators and semi conductors.


Related Discussions:- Analysis of semiconductor devices

Capacitor.., #Explain charging and discharging of the capacitor ..

#Explain charging and discharging of the capacitor ..

What is inter digit time, Q. What is inter digit time? Break time is no...

Q. What is inter digit time? Break time is nominally 61 ms and make time is nominally 39ms. Digits are separated by idle period of 300 ms known as inter digit time. It is vital

Analog, why h parameter used in low frequency transistor amplitfier

why h parameter used in low frequency transistor amplitfier

Explain about darlington amplifier, Q Explain about 'Darlington Amplifier'?...

Q Explain about 'Darlington Amplifier'? DARLINGTON AMPLIFIER : A CC stage followed by another CC stage has an input resistance of about (b + 1) 2 times the emitter resistance

Principles behind ecg monitoring, a) Provide pertinent summary of the basic...

a) Provide pertinent summary of the basic principles behind ECG monitoring b) Using MATLAB, provide plots of the "clean" and "noisy" ECG signals. Investigate the spectral es

Explain priority interrupts of 8085, Explain priority interrupts of 8085. ...

Explain priority interrupts of 8085. The 8085 microprocessor has five interrupt inputs. They are TRAP, RST .5, RST 6.5, RST 5.5, and INTR. These interrupts have a fixed prio

Scale-space pyramids, Scale-space pyramids   Write an m-file "scale_s...

Scale-space pyramids   Write an m-file "scale_space.m" which computes scale space representation of an input image for a given scale "sigma" and displays them. (i) 4 scale

Electrostatic sprayer, I would like to know the materials needed for electr...

I would like to know the materials needed for electrostatic sprayer.

Digital logical disign, design SR latch with universal logic gates.draw and...

design SR latch with universal logic gates.draw and explain the logic diagrams

Find the voltage , 1. Find the current through each component, in pola...

1. Find the current through each component, in polar form, using mesh analysis. The source voltages are rms with an angle of 0 degrees. 2. Find the current t

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