internal photoelectric effect

internal photoelectric effect

[in′tərn·əl ‚fōd·ō·ə′lek·trik i‚fekt]
(solid-state physics)
A process in which the absorption of a photon in a semiconductor results in the excitation of an electron from the valence band to the conduction band.
References in periodicals archive ?
In physics today known [4, 7]: the external photoelectric effect (the emission of the substance outside the electrons when exposed to light); internal photoelectric effect (change in electrical resistance of matter under the influence of the quanta of the electromagnetic field); photovoltaic effect (the appearance of the electromotive force in the matter under the influence of solar radiation); nuclear photoelectric effect (the emergence of a nuclear reaction in the material under the action of gamma rays).