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

What are the various types of amplifiers, Q. What are the various types of ...

Q. What are the various types of amplifiers? Amplifiers can be classified as follows: (a) Based on the transistor configuration 1. Common emitter amplifier 2. Common c

A battery consists of five cells in series, A battery having of five cells ...

A battery having of five cells in series. Each cell is 2.5V and internal resistance is 0.05 Ω. A battery is linked to the load resistance of 15Ω. Verify: i.  Total e.m.f

Case 2 a>b - program description, Case 2 ( A>B) Suppose XX = 05H ( stor...

Case 2 ( A>B) Suppose XX = 05H ( stored  in A ) And  YY = 02H ( stored  in B). Then carry  flag will  reset by CMP instruction, since  A> B in this  case JNC  will transfer the

What is the function performed by sim instruction in 8085, What is  the fu...

What is  the function performed by SIM instruction in 8085? SIM -Set Interrupt Mask. This instruction masks the interrupts as desired .it also sends out serial data by the seri

Essay, Transmission parameters are more effective than the hybrid parameter...

Transmission parameters are more effective than the hybrid parameters for simulation of the transmission line

Determine the maximum value of the voltage, Q. Three waveforms seen on an o...

Q. Three waveforms seen on an oscilloscope are shown in Figure. If the horizontal scale is set to 50 ms per division (500 ms for the entire screen width), and the vertical scale is

Discuss classification of conducting materials, Discuss classification of c...

Discuss classification of conducting materials into low resistivity and high resistivity materials. Conducting materials are categorized as low resistivity materials and high r

Explain the block diagrtam of d.c. voltmeter , Q.   Explain the block diagr...

Q.   Explain the block diagrtam of D.C. voltmeter with direct coupled amplifier. Sol. D.C, voltmeter with direct coupled Amplifier         The D.C. electronic voltmeters

Classification of solids insulators semiconductor condutors, Classification...

Classification of Solids into Insulators, Semiconductor and Conductors A solid can conduct electric current if the electrons can move in it. This is possible only when an ener

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