Differentiate between n and p type semiconductors, Electrical Engineering

Assignment Help:

Differentiate between n and p type semiconductors.

n - Type semiconductor:-

(i) If small amount of pentavalent impurity is added with, to a pure semiconductor giving a large number of free electrons in this, the extrinsic semiconductor therefore formed is termed as n- type semiconductor. The addition of pentavalent impurities as arsenic and antimony give a large no. of free electrons in the semiconductor crystal. These impurities, that produce n- type semiconductors, are termed as donor impurities since each atom of them donates individual free electron to the semiconductor crystal.       

(ii) The majority and minority carriers are electrons and holes correspondingly.

(iii) The impurity level is here below the bottom of conduction band.

p - Type semiconductor:-

(i) If small amount of trivalent impurity is added with to a pure semiconductor giving a large no. of holes in this, the extrinsic semiconductor therefore formed is termed as p- type semiconductor. This addition of trivalent impurities as gallium and indium give a large no. of holes in the semiconductor crystal. Theses impurities, that produce p- type semiconductors, are termed as acceptor impurities since each atom of them creates one hole that can accept one electron.

(ii) The majority and minority charge carriers are holes and electrons correspondingly.

(iii) The impurity level is here above the valence band.


Related Discussions:- Differentiate between n and p type semiconductors

Find load resistance and voltage, Q. Find load resistance and voltage? ...

Q. Find load resistance and voltage? Let the amplifier block be connected to a current source at the input terminals, as shown in Figure(a), and to a load resistance R L at it

Explain standby mode of operation in spc organization, Q. Explain Standby m...

Q. Explain Standby mode of operation in SPC organization? Standby mode of operation is the simplest of dual processor configuration operations. Generally one processor is activ

Unit impulse response of a linear system, Q. The unit impulse response h(t)...

Q. The unit impulse response h(t) of a linear system is h(t) = 5e -t cos(2t - 30°). Determine H(s).

DC. motors, what''s the difference between DC. motors and AC. motors

what''s the difference between DC. motors and AC. motors

What do you mean by blocking probability, Q. What do you mean by Blocking P...

Q. What do you mean by Blocking Probability? Blocking Probability:Blocking probability P is defined as probability that all the servers in system are busy. When all servers are

Regenerative braking control - motor control , Regenerative Braking Control...

Regenerative Braking Control In this  methods  motor  behaves like a  generator  and the kinetic energy of the  motor  and connected load is  returned to the supply. If means

Electric Optic Device, Transmission Through a LiNb0 3 Plate Examine the tr...

Transmission Through a LiNb0 3 Plate Examine the transmission of an unpolarized He-Ne laser beam (?o= 633 nm) normally incident on a LiNb0 3 plate (ne = 2.29, no = 2.20) of thickn

Explain the working of rectifier circuits, Q. Explain the working of Rectif...

Q. Explain the working of Rectifier Circuits? A simple half-wave rectifier using an ideal diode is shown in Figure(a). The sinusoidal source voltage v S is shown in Figure (b)

Explain fourth group of 32 ascii character code, Explain Fourth group of 32...

Explain Fourth group of 32 ASCII character code? The fourth, and final, group of 32 ASCII character codes are set aside for the lower case alphabetic symbols, five additional

Moving coil transducers, Note transducers  convert a physical quantity from...

Note transducers  convert a physical quantity from one  form to another.  The case below illustrates a typical moving coil meter   that   converts   a   current into a mechanical a

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