Question

Distinguish between (i) Intrinsic and Extrinsic semiconductor and
(ii) n-type semiconductor and p-type semi-conductor.

Answer 1

(i)

The difference between intrinsic and extrinsic semiconductor is that Intrinsic semiconductors are the pure form of semiconductor materials. Whereas extrinsic semiconductors are impure semiconductor formed by adding an impurity to a pure semiconductor.

(ii)

1)When pentavalent impurity atoms like As, Sb etc are added in the intrinsic semiconductor, we get n-type semiconductor. ... When trivalent impurity atoms like gallium, indium etc are added in the intrinsic semiconductor, we get p-type semiconductor.

2. Majority carriers are electrons and minority are holes.

Answer 2

Answer:

When pentavalent impurity atoms like As, Sb etc are added in the intrinsic semiconductor, we get n-type semiconductor. When trivalent impurity atoms like gallium, indium etc are added in the intrinsic semiconductor, we get p-type semiconductor. 2. Majority carriers are electrons and minority are holes.

hope it helps..