Difference Between Conductor, Semiconductor and Insulator


The solids which have high conductivity or low resistivity are called conductors. Metals and most of the alloys fall in this group.


There are certain solids called semiconductors whose conductivity lies in between that of conductor and insulator.

Example: Ge, Si, GaAs, CdS, etc.


The substances of this class (quartz, mica, etc) have very high resistivity or very poor conductivity.

Conductor vs Semiconductor vs Insulator: