multiphonon emission

multiphonon emission

[¦məl·tə′fō‚nän i′mish·ən]

(solid-state physics)

A process of nonradiative recombination of electrons and holes in which an electron is captured into a deep level near the middle of an energy gap associated with a lattice defect, exciting lattice vibrations, and the trapped electron state captures a hole from the valence band.