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

Poisson spot, Poisson spot (S.D. Poisson) Originally Poisson predicted...

Poisson spot (S.D. Poisson) Originally Poisson predicted the existence of such spot, and utilized the prediction to revel how the wave theory of light have to be in error to g

X-Ray, Can you please explain me about working mechanism of X-Ray mechaine

Can you please explain me about working mechanism of X-Ray mechaine

From which energy level did the atom fall, An electron in the hydrogen atom...

An electron in the hydrogen atom loses 3.02 eV as it falls to energy level E 2 . From which energy level did the atom fall?

What are the units of fibre optic communication system, What are the units ...

What are the units of fibre optic communication system? Fibre Optic Communication System: This comprises of the given three most important units: a. Transmitter: It has i

Evaluate height of water in tank, Q. Evaluate Height of Water in Tank? ...

Q. Evaluate Height of Water in Tank? A water tank has spiral a small leak at a point 2 feet from its base on the ground. A second leak sprightly over the first is 5 feet from t

#titlle friction, describe an activity to show tath sliding friction is les...

describe an activity to show tath sliding friction is less than static friction

Superconductivity introduction and superconductivity history, INTRODUCTION:...

INTRODUCTION: Superconductivity is a phenomenon takes place in certain materials at low temperatures. Characterized by precisely zero electrical resistance. Superconductors have

Thermodynamics, The internal energy change when a system goes from state A ...

The internal energy change when a system goes from state A to B is 40 kJ/mole. If the system goes from A to B by a reversible path and returns to state A by an irreversible path wh

Find refractive index of water using newtons ring, Briefly explain with nec...

Briefly explain with necessary theory how you will calculate refractive index of water/transparent liquid by using Newton's ring apparatus?

Holography.., What is holographic microscopy

What is holographic microscopy

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