(a) What is an intrinsic semiconductor?
(b) Distinguish between the p-type and n-type semi-conductors.
Explanation
(a) An intrinsic semiconductor contains equal number of free electrons and holes.
(b)
| p— TYPE |
n – TYPE |
|
| i | The majority carrier of electricity is holes. |
The majority carrier of electricity is electron. |
| ii | Carries a net positive charge |
Carries a net negative charge |
| iii | The impurity is trivalent |
The impurity is pentavalent. |