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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Titolo: | Exciton dynamics in the presence of an electron gas in GaAs quantum wells | |
Autori: | ||
Data di pubblicazione: | 2006 | |
Rivista: | ||
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. | |
Handle: | http://hdl.handle.net/11571/100309 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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