Question

What are the intrinsic & extrinsic semiconductors and also explain the conduction in N Type and P Type semiconductor on the basis of band theory.

Answer 1

Explanation:

Intrinsic semiconductors are the one with number of holes and electrons are equal, they do not conduct current, all semiconductors used are intrinsic in nature. Extrinsic semiconductor are made out of intrinsic semiconductor by doping with N-type impurity.

In n-type semiconductors, electrons are the majority carriers and holes are the minority carriers. N-type semiconductors are created by doping an intrinsic semiconductor with donor impurities. A common dopant for n-type silicon is phosphorus or arsenic. ... A common p-typedopant for silicon is boron or gallium.