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Exciton migration in self-assembled dendrite-type fractal superstructures of mo...
Bernardo, César; Belsley, M.; Coutinho, Paulo J. G.; Schellenberg, Peter; Moura, Isabel; Núñez Fernández, Yuriel; Stauber, Tobias; Vasilevskiy, MikhailWe investigated dendrite shaped superstructures made of two different QDs, namely CdSe/ZnS and CdTe. Due to the dense packing of QDs, Förster resonance energy transfer (FRET) may compete with deexcitation, and the specific dendrite shaped structure suggests the possibility of funneling of excitation from the edges of the structure to the center.
Condensed exciton polaritons in a two-dimensional trap : elementary excitations...
Núñez Fernández, Yuriel; Vasilevskiy, Mikhail; Trallero-Giner, Carlos; Kavokin, AlexeyAn exciton-polariton condensate (EPC) confined in a parabolic two-dimensional trap is considered theoretically. In the realistic limit of weakly interacting polaritons, the nonlinear term in the Gross-Pitaevskii equation describing the properties of the condensate can be considered as a perturbationwith respect to the trapping potential, which allows for a convenient analytical description of the EPC ground sta...
Resonance energy transfer in self-organized organic/inorganic dendrite structures
Melnikau, D.; Savateeva, D.; Lesnyak, V.; Gaponik, Nikolai; Núnez Fernández, Yuriel; Vasilevskiy, Mikhail; Costa, M. F.; Mochalov, K. E.; Oleinikov, V.Hybrid materials formed by semiconductor quantum dots and J-aggregates of cyanine dyes provide a unique combination of enhanced absorption in inorganic constituents with large oscillator strength and extremely narrow exciton bands of the organic component. The optical properties of dendrite structures with fractal dimension 1.7–1.8, formed from J-aggregates integrated with CdTe quantum dots (QDs), have been inv...
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