The dynamics of excitons in a GaAs quantum well in the presence of an electron gas is investigated by time resolved photoluminescence (PL). We prove that the emission at the exciton energy originates from a real exciton population for all time delays. Moreover we show that injecting a low density electron gas strongly accelerates the exciton dynamics, by increasing the exciton formation rate.

Exciton dynamics in the presence of an electron gas in GaAs quantum wells

BAJONI, DANIELE;
2006-01-01

Abstract

The dynamics of excitons in a GaAs quantum well in the presence of an electron gas is investigated by time resolved photoluminescence (PL). We prove that the emission at the exciton energy originates from a real exciton population for all time delays. Moreover we show that injecting a low density electron gas strongly accelerates the exciton dynamics, by increasing the exciton formation rate.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/100309
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