How are p-type and n-type semiconductor obtained, Chemistry

Assignment Help:

How are p-type and n-type semiconductor obtained?

A P-type semiconductor is attained by carrying out a process of doping which is adding a certain type of atoms to the semiconductor in order to increase number of free charge carriers  (in  this  case  positive).  Purpose of P-type doping is to create an abundance of holes.

When doping material is added, it takes away (accepts) weakly-bound outer electrons from semiconductor atoms. This kind of doping agent is also called as acceptor material and the semiconductor atoms that have lost an electron are termed as holes.

An N-type semiconductor is attained by carrying out a process of doping, that is, by adding an impurity of valence-five elements to a valence-four semiconductor in order to increase number  of  free  charge  carriers  (in  this  case  negative).  Purpose of N-type doping is to produce an abundance of mobile or "carrier" electrons in the material.

 


Related Discussions:- How are p-type and n-type semiconductor obtained

Illustrate properties of protons and neutrons, Q. Illustrate Properties of ...

Q. Illustrate Properties of Protons and Neutrons? Ans. We now know that following fundamental properties of protons and neutrons: 1. The proton has a charge of +1, which

Determine equilibrium constants for acid and base, Q. Determine Equilibrium...

Q. Determine Equilibrium Constants for Acid and base? Ans. The  pH scale  of acidity is a simple and convenient way to state the acidity of a solution. The

Explain fully the potential health hazards, An analysis of the state of the...

An analysis of the state of the Brazilian chemical industry in 1998 revealed that the actually used technologies were transferred in a period where industrial waste generation, tre

Platinum crystal structure, 1.  Consider a platinum crystal structure (FCC,...

1.  Consider a platinum crystal structure (FCC, R Pt = .139 nm). a.  Sketch the (100), (110), and (111) planes (including the atoms in the second layer if they can be observed

Explain ellingham diagrams, Q. Explain Ellingham Diagrams? Ellingham st...

Q. Explain Ellingham Diagrams? Ellingham studied the variation of standard free energy change for the formation of a number of compounds, e.g., oxides, sulphides and chlorides,

Solutions, how many moles of KOH are needed to exactly neutralize 500ml of ...

how many moles of KOH are needed to exactly neutralize 500ml of 1.5M HCL solution?

Inorganic chemistry, dipole moment of para.nitro aniline is 6.10 D.why

dipole moment of para.nitro aniline is 6.10 D.why

Interconversion of the resonance structures, Interconversion of the resonan...

Interconversion of the resonance structures of carbon monoxide with the curved-arrow notation: Because the carbon in the structure on the left has a sextet of electrons, it

Free radical and aromatic rearrangement, Free radical and Aromatic rear...

Free radical and Aromatic rearrangement Migration or Rearrangement to free radical species or Free radical rearrangement: Those rearrangement reactions where the migr

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