bandgap

1. The energy difference between two allowed ranges of electron energy in a solid; especially the difference between the energies of the valence band and the conduction band.

   Bandlücke

   запрещённая зонаzapreščónnaja zona

2. A gap in a frequency range in which waves cannot propagate.

   The propagation of an acoustic wave inside a phononic crystal is forbidden in the bandgap frequency range due to Bragg scattering.

regular

• band gapalternative