MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
vipul sikka Grade: 12
        Why is p and n type semiconductor elecrically neutral
7 years ago

Answers : (1)

Ramesh V
70 Points
										

all semiconductors are firstly insulators because they contain equal no of +ve & -ve charges.both n & p type semiconductors are made by doping or by increasing temperature.


Consider first the intrinsic material--no donors. You agree that is neutral. Now we add a donor material. Each atom of donor material is added whole, protons and electrons and is also neutral. So adding donor atoms does not change the neutrality of the material. However, the donor atoms do not "fit right" into the lattice of atoms of the receptor material, making it easier for electrons (in "n" material) or holes (electron absence in "p" material) to "break free" of the forces binding them to the atom. These electrons and holes provide the conductivity of the doped material.


--


regards


Ramesh

7 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete AIPMT/AIIMS Course and Test Series
  • OFFERED PRICE: Rs. 15,900
  • View Details
Get extra Rs. 3,180 off
USE CODE: CART20
  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: Rs. 15,900
  • View Details
Get extra Rs. 3,180 off
USE CODE: CART20

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details