Mechanisms of interdot coupling in (In,Ga)As/GaAs quantum dot arrays

Mazur, Yu. I.; Dorogan, V. G.; Marega Jr., E.; Tarasov, G. G.; Cesar, D. F.; Lopez-Richard, V.; Marques, G. E.; Salamo, G. J.
March 2009
Applied Physics Letters;3/23/2009, Vol. 94 Issue 12, p123112
Academic Journal
Interdot coupling in (In,Ga)As/GaAs quantum dot arrays is studied by means of steady state and time-resolved photoluminescence (PL). A peculiar dependence of the PL decay time on the excitation and detection energy is revealed and ascribed to the peculiarities of the carrier and energy relaxation caused by both immediate electronic interdot coupling and long-range coupling through the radiation field.


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