What is a semiconductor ? Describe the two main types of semiconductors and contrast their conduction mechanism.

Explanation

Substances having conductance intermediate between those of conductors (metals) and non- conductors (insulators) are called semiconductors.
Two main types of semiconductors are n-type and p-type.
Solids doped with electron rich impurities are n-type semiconductors while electron deficit semiconductors are p-type semiconductors.
While n-type semiconductors work by the movement of negative charge (electrons), the p-type semiconductors work by the movement of positive charge (vacancies).