Distinguish between ‘intrinsic’ and ‘extrinsic’ semiconductors.

Asked by Last Modified  

5 Answers

Follow 0
Answer

Please enter your answer

Educa Academy

An intrinsic semiconductor material is chemically very pure and possesses poor conductivity. It has equal numbers of negative carriers (electrons) and positive carriers whereas an extrinsic semiconductor is an improved intrinsic semiconductor with a small amount of impurities added by a process, known...
read more
An intrinsic semiconductor material is chemically very pure and possesses poor conductivity. It has equal numbers of negative carriers (electrons) and positive carriers whereas an extrinsic semiconductor is an improved intrinsic semiconductor with a small amount of impurities added by a process, known as doping, which alters the electrical properties of the semiconductor and improves its conductivity. read less
Comments
Dislike Bookmark

Teaching professional with 20 years of experience in teaching Chemistry

Intrinsic semiconductor: An intrinsic semiconductor material is chemically very pure and possesses poor conductivity. It has equal numbers of negative carriers (electrons) and positive carriers (holes). A silicon crystal is different from an insulator because at any temperature above absolute zero temperature,...
read more
Intrinsic semiconductor: An intrinsic semiconductor material is chemically very pure and possesses poor conductivity. It has equal numbers of negative carriers (electrons) and positive carriers (holes). A silicon crystal is different from an insulator because at any temperature above absolute zero temperature, there is a finite probability that an electron in the lattice will be knocked loose from its position, leaving behind an electron deficiency called a "hole".If a voltage is applied, then both the electron and the hole can contribute to a small current flow. Extrinsic Semiconductor An extrinsic semiconductor is an improved intrinsic semiconductor with a small amount of impurities added by a process, known as doping, which alters the electrical properties of the semiconductor and improves its conductivity. Introducing impurities into the semiconductor materials (doping process) can control their conductivity. Doping process produces two groups of semiconductors: the negative charge conductor (n-type) and the positive charge conductor (p-type). Semiconductors are available as either elements or compounds. Silicon and Germanium are the most common elemental semiconductors. Compound Semiconductors include InSb, InAs, GaP, GaSb, GaAs, SiC, GaN. Si and Ge both have a crystalline structure called the diamond lattice read less
Comments
Dislike Bookmark

M.Sc. Biomedical Genetics, B.Sc. Biotechnology

Intrinsic Semiconductors 1. Intrinsic semiconductors, also called an undoped semiconductors or i-type semiconductor, are pure semiconductor without any significant dopant species present. The number of charge carriers is therefore determined by the properties of the material itself instead of the amount...
read more
Intrinsic Semiconductors 1. Intrinsic semiconductors, also called an undoped semiconductors or i-type semiconductor, are pure semiconductor without any significant dopant species present. The number of charge carriers is therefore determined by the properties of the material itself instead of the amount of impurities. 2. Conductivity of intrinsic semiconductors is poor . 3. Number of electrons in conduction band and holes in valence band are approximately equal . 4. Fermi energy level lies at the centre of forbidden energy gap. Extrinsic Semiconductors 1. These are impure semiconductors . When a small quantity of impurity is mixed in a pure or intrinsic conductor , conductivity of semiconductor increases . Such an impure semiconductor is called extrinsic semiconductor. 2. Conductivity of extrinsic semiconductors is large. 3. If it is an n-type electrons are in majority and if it is a p-type holes are in majority . 4. In n-type Fermi-level lies near the bottom of conduction band and in p-type near the top of valence base . read less
Comments
Dislike Bookmark

B.Tech(EC/EE/IN),Math(IX,X,XI,XII std.),Physics(IX,X,XI,XII std.) CBSE/ICSE/IB.

These are impure semiconductors . When a small quantity of impurity is mixed in a pure or intrinsic conductor , conductivity of semiconductor increases . Such an impure semiconductor is called extrinsic semiconductor
Comments
Dislike Bookmark

Math Educator for Std.11th ,12th , Engineering Entrance and Degree Level with 11+ Years Experience

Intrinsic Semiconductor : 1.)These are pure semiconductor without any significant dopant species present. it is also called i-type semicondoctor. The number of charge carriers is therefore determined by the properties of the material itself instead of the amount of impurities. 2.) Conductivity of intrinsic...
read more
Intrinsic Semiconductor : 1.)These are pure semiconductor without any significant dopant species present. it is also called i-type semicondoctor. The number of charge carriers is therefore determined by the properties of the material itself instead of the amount of impurities. 2.) Conductivity of intrinsic semiconductors is poor . 3.) Number of electrons in conduction band and holes in valence band are approximately equal . 4.) Fermi energy level lies at the centre of forbidden energy gap. Extrinsic Semiconductors : 1.) These are impure semiconductors . When a small quantity of impurity is mixed in a pure or intrinsic conductor , conductivity of semiconductor increases . Such an impure semiconductor is called extrinsic semiconductor. 2.) Conductivity of extrinsic semiconductors is large. 3.) If it is an n-type semiconductor , electrons are majority carrier and holes are minority carrier and if it is a p-type semiconductor ,holes are majority carrier and electrons are minority carrier. 4.) In n-type semiconductor,Fermi-level lies near the bottom of conductioin band and in p-type semiconductor, fermi - level lies near the top of valence band . read less
Comments
Dislike Bookmark

View 3 more Answers

Related Questions

Students can post there queries regarding mathematics. Regards, Raghuveera Institute, New Delhi.
transforms are useful to create a linear transform between two important quantities, for example time and frequency.
Raghuveera Institute Private Limited
How can I study for IIT preparation from class 11 without coaching?
Follow Arihanth book series. Solve each and every problems. Check the syllabus on net. Follow YouTube. And take best faculties in your home.
Sweetu
How should I study by my own in class 11 and 12 without coaching?
Only you just to wore hard and do study daily to achieve your goal.
Bivash
0 0
View Comments5
Can i choose test center of my choice?
Absolutely yes. It is your right to choose a test center of your preference.
Biswas
How do I manage time to study in class 12 with coaching and school?
All you need is proper planning .
Ashwini
0 0
View Comments5

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Work and Energy

Vishesh N.

0 0
View Comments0
How to prepare for JEE Mains and Advance.
Focus on fundamentals. Keep all the derivations of the theorems handy. Learn them up-side-down. In JEE-advanced the type of question asked are based on those concepts.

Santosh Anand

0 0
View Comments0
Tension in a String!
Enter Learning Tip Content

Vishesh N.

0 0
View Comments0
Useful Collision Concepts Two dimensional Collision
We should note the following concepts when solving a Two-Body Collision Numerical:-Distance Between the centres of two Bodies -"b."When we have two objects colliding with each other, we assume both are...

Physics Institute

0 0
View Comments0
How To Study Effectively?
HOW TO STUDY EFFECTIVELY? Proper, Planning, Prevents, Poor, Performance There are a variety of study systems available, but all are organized in basically the same way and are designed to accomplish...

Aswathi V.

1 0
View Comments0

Recommended Articles

Know-how to ace the IIT JEE Exam

The race to become an IITian has never been easy. With changing time, pattern of the test keep changing but fundamental remains the same. It’s a given, every aspiring IITian has to work, work and work. Simply there is no other way out. To shorten your distance from being an IITian, you can work smart. Here are few tips...

Read full article >

How to Score High in JEE Chemistry Paper?

Chemistry is a very scoring subject if you prepare with proper planning and dedicated study hours. Unlike JEE Physics and Mathematics, Chemistry is less about applications and concepts and more about planning. If you want to make the most out of Chemistry paper in IIT JEE exam, you need to have the periodic table pinned...

Read full article >

What are the important topics for IIT JEE...

With the passion to pursue engineering from a premier institute like IIT, a lot of students aim at cracking the IIT JEE to live this dream right from their 11th standard. Considered as one of the most difficult entrance exams across the globe, not many know how to prepare for JEE and lack correct guidance. Here we will...

Read full article >

Is coaching a must for JEE exam? Three advantages...

Well, if you ask me ‘Can I clear the JEE exam without coaching?’ My answer would be ‘Yes’. Having said that, neither self-study nor coaching guarantees you 100% Success in the JEE exam. Actually, whether you should opt for JEE coaching or not, depends a lot on your level of preparedness for the exam. Are you smart enough?...

Read full article >

Find IIT JEE Coaching near you
IIT JEE Coaching in Mumbai
IIT JEE Coaching in Delhi
IIT JEE Coaching in Bangalore
IIT JEE Coaching in Kolkata
IIT JEE Coaching in Hyderabad
IIT JEE Coaching in Chennai
IIT JEE Coaching in Pune
IIT JEE Coaching in Jaipur
IIT JEE Coaching in Lucknow
IIT JEE Coaching in Gurgaon
Online IIT JEE Coaching

Looking for IIT JEE Coaching ?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you