G. Klimovitch et al., SELECTIVE RESONANT-TUNNELING INTO MICROCAVITY EXCITON-POLARITON STATE, Physical review. B, Condensed matter, 55(11), 1997, pp. 7078-7083
Electron resonant tunneling into the exciton state in a semiconductor
quantum well may be turned into the tunneling to hybrid exciton-photon
modes (exciton polaritons). The latter process can be used to make el
ectrically pumped light-emitting devices with high (similar to 50%) qu
antum efficiency and fast (similar to ps) radiative decay time.