Explain the energy bands in solids, Electrical Engineering

Assignment Help:

Explain the energy bands in solids.

There are as several energy bands in a solid as there are energy levels in the parent atoms.

Many electrical properties of significance to engineers and scientists are associated to the upper band of energy levels and to be exact the upper two termed as the conduction band and the valance band. The valence bands have energies of similar level as those of valence electrons. Electrons in such band are in effect attached to particular atoms and thus not free to move about.

The conduction band energies are high adequate therefore electrons attaining these levels of energy are loosely attached to particular atoms or practically free such as they could easily move under the affect of an electric field. Electrons in the valence band can leave their band to join the conduction band when given adequate energy to jump the forbidden energy band (energy gap, as Eg). The size of Eg is a prime factor in determining whether a solid is a semiconductor, an insulator, or a conductor.


Related Discussions:- Explain the energy bands in solids

Balanced score card and key performance indicators, Balanced Score Card and...

Balanced Score Card and Key Performance Indicators Every successful organization measures its performance across the subsequent parameters, for dissemination to all stakeholde

What is own-exchange routing, Q. What is Own-exchange routing? Distribu...

Q. What is Own-exchange routing? Distributed routing or own-exchange routing enables alternative routes to be chosen at intermediate nodes. Hence the strategy is capable of res

DECISIEN FEEDBACK, Do you provide me matlab code for comparison the perfor...

Do you provide me matlab code for comparison the performance of decision feedback equalizer over MLSE

Embedded systems design, You have been requested by your Senior Engineer to...

You have been requested by your Senior Engineer to design a lift control unit (LCU) and prepare a report detailing your proposed solution. The client requires a microcontroller bas

3rd year electrical/electronics project, I`m a 3rd year electrical engineer...

I`m a 3rd year electrical engineering student studying in Canada, and there is a new course they added in my university for 3rd year students called Engineering Project. from the

Compensating windings, #full discuss on compensating windingsquestion..

#full discuss on compensating windingsquestion..

Electric circuits, How to design a single phase distribution circuit from a...

How to design a single phase distribution circuit from a supply point to a load?

Notations that are used in transistor circuits -h parameters, Notations tha...

Notations that are used in transistor circuits:-             h ie = h 11e = Short circuit input impedance             h 0e = h 22e = Open circuit output admittance

Find the voltage gain, Q. In a CD amplifier,given Rs =4k?, µ=50 and rd= 35k...

Q. In a CD amplifier,given Rs =4k?, µ=50 and rd= 35k μ. Find the voltage gain Av. The voltage gain,  A v = Vo / V i = µR s / (µ+1) R s + rd = 50*4* (103 )/ (50+1)*4*103

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