A CDE Definition
In a material, the energy difference between its non-conductive state and its conductive state. There is virtually no bandgap in most metals, but a very large one in an insulator (dielectric). In a semiconductor, the bandgap is small. Technically, the bandgap is the energy it takes to move electrons from the valence band to the conduction band.
Before/After Your Search Term
Terms By Topic
Click any of the following categories for a list of fundamental terms.