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 si system, Q. Describe SI System and Standards Ans: Wh...

Q. Describe SI System and Standards Ans: What units you will you use science class? Long ago people decided that the "foot" must be standardized so that when I measure

Iodoform, chemical equation of K2CO3+CH#CH@OH+I2

chemical equation of K2CO3+CH#CH@OH+I2

An ionic compound is generally, An ionic compound is generally a : (1) ...

An ionic compound is generally a : (1) Good electrolyte (2)Weak electrolyte (3) Non-electrolyte (4) Neutral Ans:  Good electrolyte

Scientific notation and dimensional analysis, Q. Scientific Notation and Di...

Q. Scientific Notation and Dimensional Analysis? Very small and extremely large numbers can be compared more easily when they are converted into a form called scientific notati

Matter, Q.give characterstics of matter?

Q.give characterstics of matter?

Structure and bonding in solids-crystals and glasses, Crystals and glasses ...

Crystals and glasses   Unlike a complex ion or molecule, which is a finite (often small) assembly of atoms, a solid has no fixed shape and size but can add atoms indefinit

By which cycle form a helium nucleus?, Q) Inside the sun four hydrogen nucl...

Q) Inside the sun four hydrogen nuclei combine to form a helium nucleus by which cycle? Ans) Proton-proton cycle.

Effect of concentration, Q. Show the Effect of concentration on Chemical Eq...

Q. Show the Effect of concentration on Chemical Equilibrium? Ans. When more of one of the chemicals is added to the reaction, more collisions take place moving the reactio

What is free energy?, THermodynamic free enrgy is the amount of work a ther...

THermodynamic free enrgy is the amount of work a thermodynamic system can perform. The concept is useful in the thermodynamics of chemical or thermal processes in engineering and

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