Explain n-type and p-type semiconductors, Electrical Engineering

Assignment Help:

Explain n-type and p-type semiconductors.

n - Type semiconductor: If small amount of pentavalent impurity (group V elements) is added to a pure semiconductor giving a large number of free electrons in this, the extrinsic semiconductor hence formed is called n- type semiconductor. This addition of pentavalent impurities as like arsenic and antimony offer a large number of free electrons in the semiconductor crystal. These type impurities, which create n- type semiconductors, are called donor impurities as each atom of them donates one free electron to conduction band in the semiconductor crystal.

p - Type semiconductor: If small amount of trivalent impurity group III elements is added to a pure semiconductor giving a huge number of holes in this, the extrinsic semiconductor thus formed is called p- type semiconductor. This addition of trivalent impurities as like gallium and indium give a large number of holes in the semiconductor crystal. These type impurities, that produce p- type semiconductors, are called acceptor impurities as each atom of them creates one hole, into valence band, that can accept one electron.


Related Discussions:- Explain n-type and p-type semiconductors

Speed control using phase controlled converters , Speed Control Using Phase...

Speed Control Using Phase Controlled Converters Phase controlled  converters converts a constant ac voltage  into  variable  controlled  dc voltage. This  variable  dc voltage

Amplifiers with feedback, Q. Amplifiers with Feedback? Almost all pract...

Q. Amplifiers with Feedback? Almost all practical amplifier circuits include some form of negative feedback. The advantages gained with feedback may include the following: •

Find the expressions for the capacitor voltage, Consider the RC circuit of ...

Consider the RC circuit of Figure (a) with R = 2 ,C = 5F,and i(t) = I = 10 A (a dc current source). Find the expressions for the capacitor voltage vC(t) and the capacitor current

Power analyser, Explain frequency selective wave analyser with bandwidth

Explain frequency selective wave analyser with bandwidth

Research publication, i need research publication help. The topic is PHASED...

i need research publication help. The topic is PHASED ARRAY ANTENNA DESIGN for KU-band. I want a research paper that can be published in some conference.

What is open-loop voltage gain, Q. What is Open-loop voltage gain? The ...

Q. What is Open-loop voltage gain? The op amp amplifies the difference vd between the voltage on the noninverting (+) terminal and the inverting (-) terminal; see Figure. The t

Polarisation, describe the working and construction diagram of nicholas pri...

describe the working and construction diagram of nicholas prism

Properties and application of permanent magnetic materials, Give the proper...

Give the properties and application of permanent magnetic materials. Permanent magnetic materials: Properties: Permanent magnetic materials have a huge area of hyster

Find dispersion relation for free electron, Find Dispersion Relation for Fr...

Find Dispersion Relation for Free Electron Question: Find the dispersion relation for a free electron, and, thus, observe the relation between its rest mass and effective ma

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