Define n-type semiconductor
CBSE, JEE, NEET, CUET
Question Bank, Mock Tests, Exam Papers
NCERT Solutions, Sample Papers, Notes, Videos
Posted by Sharan Dark 4 years, 9 months ago
- 2 answers
Tanya ?? 4 years, 9 months ago
An n-type semiconductor is an intrinsic semiconductor doped with phosphorus (P), arsenic (As), or antimony (Sb) as an impurity. ... If a small amount of phosphorus is added to a pure silicon crystal, one of the valence electrons of phosphorus becomes free to move around (free electron) as a surplus electron.
Related Questions
Posted by Anterpreet Kaur 1 year, 3 months ago
- 0 answers
Posted by Aniket Mahajan 7 months, 2 weeks ago
- 0 answers
Posted by Khushbu Otti 1 year, 2 months ago
- 0 answers
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Yogita Ingle 4 years, 9 months ago
N-Type Semiconductor
When a pure semiconductor (Silicon or Germanium) is doped by pentavalent impurity (P, As, Sb, Bi) then, four electrons out of five valence electrons bonds with the four electrons of Ge or Si.
The fifth electron of the dopant is set free. Thus the impurity atom donates a free electron for conduction in the lattice and is called “Donar“.
Since the number of free electron increases by the addition of an impurity, the negative charge carriers increase. Hence it is called n-type semiconductor.
Crystal as a whole is neutral, but the donor atom becomes an immobile positive ion. As conduction is due to a large number of free electrons, the electrons in the n-type semiconductor are the MAJORITY CARRIERS and holes are the MINORITY CARRIERS.
0Thank You