Explain pn-junction diode, Physics

Assignment Help:

PN-Junction Diode:

Introduction:

An electronic device which is made by linking together P-type semi-conductor and N-type semiconductor is known as p-n junction diode or a semiconductor diode. It permits the current to flow in one direction only.

Construction:

1.  A p-n junction diode or a semiconductor diode is fabricated by adding a pentavalent impurity (antimony) at the one end and a trivalent impurity (Boron or Indium) at the other end of a germanium crystal.

2. A junction is formed because of the flow of electrons n-type and p-type material and holes from p-types to n-types material and a junction is created which is p-n Junction.

3. The barrier is setup at the junction which stops further flow of free electrons from n-type to p-type and holes from p-type to n-type material.

4. The barrier is known as the junction barrier or potential barrier (0.1 - 0.7 V). The region of potential barrier is known as depletion region.

5. When p-n junction diode is linked to an external voltage source, it permits current to flow in one direction only.

 


Related Discussions:- Explain pn-junction diode

What is angular velocity, The power of change of angular displacement with ...

The power of change of angular displacement with respect to time is known as angular velocity.

Flux, as flux = E.A and flux density is equal to flux/A then why A/A cannot...

as flux = E.A and flux density is equal to flux/A then why A/A cannot e cancelled ?

Capacitor measurements with digital multimeters, CAPACITOR MEASUREMENTS : ...

CAPACITOR MEASUREMENTS : Many modern digital multimeters incorporate a capacitance measuring facility although this may be limited to just one or two ranges. The diagram below

Determine dielectric constant of vacuum, Dielectric constant of vacuum is ...

Dielectric constant of vacuum is (A) Infinity. (B) 100. (C) One. (D) Zero. Ans: Dielectric constant of vacuum is one.

Define the period and the square root of the length, What is the relationsh...

What is the relationship among the period and the square root of the length? The graph is linear, so the period is proportional to the square root of the length of the string.

Are fibers optics systems expensive, Are fibers optics systems expensive? ...

Are fibers optics systems expensive? To find out whether a system is expensive one would have to establish a comparison with an option, which in most cases doesn't exist. To co

Find the shell temperature, Q. Find the shell temperature? In a shell-a...

Q. Find the shell temperature? In a shell-and-tube heat exchanger, one fluid passes through a central tube while another fluid flows through an outer shell in the opposite dire

Determine the corresponding set of electric field lines, Specified a set of...

Specified a set of equipotential surfaces how does one determine the corresponding set of electric field lines? Feedback: An equipotential surface signifies a set of poin

Show conjugate complex poles, Q. Show Conjugate Complex Poles? It is po...

Q. Show Conjugate Complex Poles? It is possible that some of the poles of Equation are complex. Since the coefficients ak in Equation are real, complex poles occur in complex c

5/14/2013 2:21:32 AM

Thanks for suggesting me this answer, appreciate your knowledge. 

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