exciton-induced photoemission

exciton-induced photoemission

[¦ek·si‚tän in‚düst ′fōd·ō·i‚mish·əm]
(electronics)
A two-stage process that takes place in an ionic crystal in which color centers are present, in which photon absorption leads to the formation of an exciton, and the exciton then transfers enough energy to color centers to eject photoelectrons from the crystal.