Quantum-kinetic theory of hot luminescence from pulse-excited semiconductors

A theory of time-resolved luminescence from photoexcited semiconductors is presented. It combines quantum kinetics of hot-carrier relaxation and quant um theory of spontaneous emission. Model calculations show the "transfer" o f photoluminescence from the initial signal at the pump frequency via subse quent phonon replicas until the buildup of luminescence at the excitonic re sonance. Time-resolved photoluminescence is predicted to be a sensitive mea sure of electron-LO-phonon quantum kinetics and bottleneck effects.