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

Explain emergency repairs to rail fracture, Q. Explain Emergency Repairs to...

Q. Explain Emergency Repairs to rail fracture? Emergency Repairs - The fractured rails shall be joined by using the arrangements clamps, fish plates. If the gap at fracture doe

Describe about boltzmann constant, Q. Describe about Boltzmann constant? ...

Q. Describe about Boltzmann constant? The constant η in Figure (b) stands for the noise power spectral density, expressed in terms of power per unit frequency (W/Hz). Statistic

Explain memory mapped i/o scheme for the allocation, Explain Memory Mapped ...

Explain Memory Mapped I/O Scheme. Memory Mapped I/O Scheme: In this scheme there is only one address space. Address space is explained as all possible addresses which microproc

Calculate the bandwidth of the new signal, A signal comprises a bandwidth o...

A signal comprises a bandwidth of 1kHz centred around 1kHz.  A sine wave along with a frequency of 1250Hz is added to the signal. The bandwidth of the new signal is: 2250Hz

Mr GZ, HOW TO PERFOM AUTO DIALLING USING GSM MODULE

HOW TO PERFOM AUTO DIALLING USING GSM MODULE

Design a battery charger, The problem with a battery charger (say, for port...

The problem with a battery charger (say, for portable devices) is that it continues to draw power even after the battery is fully charged thereby wasting electricity. In addition,

Diploma in electrical engineering, After I complete my diploma how I get a ...

After I complete my diploma how I get a job in goverment

ECE, a problem solving problem

a problem solving problem

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