The energy difference between the bottom of the
conduction band
and the top of the
valence band
in a
semiconductor
or an insulator.
See: conduction band
,
Fermi level
Source: PAC, 1996,
68, 2223. (
Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2229 [
Terms] [
Paper]