Exciton population effects in semiconductor luminescence

Semiconductor photoluminescence is discussed under incoherent excitation co nditions and the effects due to bound excitons are studied self-consistentl y. Due to the composite electron-hole nature of bound states, the exciton n umber operator has a dominant fermionic part which cannot be neglected when luminescence is analyzed. As a result, the emission from the Coulomb corre lated electron-here plasma and possible exciton populations is shown to be qualitatively similar under the excitation conditions investigated.