Courses

N-type and P-type Semiconductors Class 12 Notes | EduRev

Physics Class 12

Created by: Infinity Academy

Class 12 : N-type and P-type Semiconductors Class 12 Notes | EduRev

The document N-type and P-type Semiconductors Class 12 Notes | EduRev is a part of the Class 12 Course Physics Class 12.

All you need of Class 12 at this link: Class 12

N-type and P-type Semiconductors

d) Difference between N-type and P-type semiconductors

S.No.	N-type semiconductors	P-type semiconductors
1.	In these the impurity of some pentavalent element like P, As, Sb, Bi, etc. is mixed	In these, the impurity of some trivalent element like b, Al, In, Ga etc. is mixed
2.
3.	in these the impurity atom donates one electrons, hence these are known as donor type semiconductors	In these, the impurity atom can accept one electron, hence these are known as acceptor type semiconductors.
4.	In these the electrons are majority current carriers and holes are minority current carriers, (i.e. the electron density is more than hole density n_n>> n_p)	In these the holes are majority current carriers and electrons are minority current carriers i.e. n_p >> n_n
5.	In these there is majority of negative particles (electrons) and hence are known as N-type semiconductors	In these there is majority of positive particles (cotters) and hence are known as P-type semiconductors.
6.	in these the donor energy level is close to the conduction band and far away from valence band.	In these the acceptor energy level is close to the valence band and far away from conduction band.

(e) Conductivity formulae:

(a) N-type and P-type Semiconductors Class 12 Notes | EduRev
(b)
(c)
(d)

(f) Resistivity formulae:

(a) N-type and P-type Semiconductors Class 12 Notes | EduRev
(b)
(c)
(d)
(e)
(f)

(vii) Characterizes Si and Ge at 300 K

Characteristics	Ge	Si
Energy gap	0.7 (eV)	1.1 (eV)
Electron mobility (μ_n)	0.39 (M²V^-1S^-1)	0.135 (M²V^-1S^-1)
Cotter mobility (μ_p)	0.19 (M²V^-1S^-1)	0.048 (M²V^-1S^-1)
Intrinsic current concentration	n_i = 2.4 x 10¹⁹ cm^-3	n_i = 1.5 x 10¹⁶ cm^-3
Resistivity	0.46 Ω-m	2300 Ω-m
Potential barrier	0.3 V	0.7 V

Offer running on EduRev: Apply code STAYHOME200 to get INR 200 off on our premium plan EduRev Infinity!

Download EduRev app here for Class 12 preparation.

Up next >

NCERT Solutions - Semiconductor Electronics

Doc | 11 pages

Classification: Conductors, Semi Conductors and Insulators (Energy Bands)

Video | 16:43 min

Test: Semiconductor Electronics 2 - From Past 28 Years Questions

Test | 25 ques | 50 min

N type Semiconductors

Video | 07:04 min

Test: Semiconductor Electronics 3 - From Past 28 Years Questions

Test | 25 ques | 50 min

P N Junction Formation

Video | 17:18 min

< Previous

Extrinsic Semiconductors

Video | 07:58 min

Previous year Questions (2016-20) - Semiconductor devices, Communications systems (Part - 1)

Doc | 8 pages

Content Details

Views: 2.9K
Rating: 4.8 (16)
Sep 23, 2017
Class 12

Description

N-type and P-type Semiconductors Class 12 Notes | EduRev notes for Class 12 is made by best teachers who have written some of the best books of Class 12. It has gotten 2944 views and also has 4.8 rating. You can download Free N-type and P-type Semiconductors Class 12 Notes | EduRev pdf from EduRev by using search above. You can also find N-type and P-type Semiconductors Class 12 Notes | EduRev ppt and other Class 12 slides as well. If you want N-type and P-type Semiconductors Class 12 Notes | EduRev Tests & Videos, you can search for the same too. Class 12 N-type and P-type Semiconductors Class 12 Notes | EduRev Summary and Exercise are very important for perfect preparation. You can see some N-type and P-type Semiconductors Class 12 Notes | EduRev sample questions with examples at the bottom of this page. Complete N-type and P-type Semiconductors Class 12 Notes | EduRev chapter (including extra questions, long questions, short questions, mcq) can be found on EduRev, you can check out Class 12 lecture & lessons summary in the same course for Class 12 Syllabus. EduRev is like a wikipedia just for education and the N-type and P-type Semiconductors Class 12 Notes | EduRev images and diagram are even better than Byjus! Do check out the sample questions of N-type and P-type Semiconductors Class 12 Notes | EduRev for Class 12, the answers and examples explain the meaning of chapter in the best manner. This is your solution of N-type and P-type Semiconductors Class 12 Notes | EduRev search giving you solved answers for the same. To Study N-type and P-type Semiconductors Class 12 Notes | EduRev for Class 12 this is your one stop solution.