direct-band-gap semiconductor

direct-band-gap semiconductor

[də′rekt ′band ‚gap ′sem·i·kən‚dək·tər]
(solid-state physics)
A semiconductor material in which the state of minimum energy in the conduction band and the state of maximum energy in the valence band have the same momentum, so that optical transitions between free electrons and holes are allowed.
References in periodicals archive ?
As an important III-V direct-band-gap semiconductor, GaAs has attracted a great deal of interest.
Full browser ?