Question

What is the reason of adding donor and acceptor element to a semi conductor? Choose an element that for an acceptor impurity and one for donor impurity.

Answer 1

The impurities that increases conductivity by donating charge is known as donor impurities, f. ex. P, As.

Those impurities that accepts the charge for increasing conductivity is known as acceptor impurities, f. ex. B, In, Al, Ga