Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
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

Why is p and n type semiconductor elecrically neutral

Why is p and n type semiconductor elecrically neutral

Grade:12

1 Answers

Ramesh V
70 Points
11 years ago

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

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free