Dependence of Resonance Energy Transfer on Exciton Dimensionality

Rindermann, Jan Junis; Pozina, Galia; Ḿonemar, B.; Hultman, Lars; Amano, Hiroshi; Lagoudakis, Pavlos G.

doi:10.1103/physrevlett.107.236805

Cited by 45 publications

(52 citation statements)

References 19 publications

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“…Here, they characterize excitation transfer and not charge transfer. The donor and acceptor systems may be realized as quantum dots, [3][4][5][6] quantum wires, 7 quantum wells 8,9 and colloidal nanoplatelets, 10 , biological molecules, 11,12 defects in semiconductor. 13,14 Typically, the range of the Förster interaction is on the order of several nm.…”

Section: Introductionmentioning

confidence: 99%

Nonradiative and radiative Förster energy transfer between quantum dots

Poddubny

Rodina

2016

J. Exp. Theor. Phys.

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We study theoretically nonradiative and radiative energy transfer between two localized quantum emitters, donor one (i.e. initially excited) and acceptor one (i.e. receiving the excitation). The rates of nonradiative and radiative processes are calculated depending on the spatial and spectral separation between donor and acceptor states and for different donor and acceptor lifetimes for typical parameters of semiconductor quantum dots. We find that the donor lifetime can be significantly modified only due to the nonradiative Förster energy transfer process at donor-acceptor separations ∼ 10 nm (depending on the acceptor radiative lifetime) and for the energy detuning not larger than 1÷2 meV. The efficiency of the nonradiative Förster energy transfer process under these conditions is close to unity and decreases rapidly with the increase of donor-acceptor distance or energy detuning. At large donor-acceptor separations > 40 nm the radiative corrections to the donor lifetime are comparable with nonradiative ones but are relatively weak.

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Section: Introductionmentioning

confidence: 99%

Nonradiative and radiative Förster energy transfer between quantum dots

Poddubny

Rodina

2016

J. Exp. Theor. Phys.

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“…В полупроводниковых системах FRET экспериментально исследовался ранее в ансамблях коллоидных QDs [13,14], вертикально-свя-занных массивах эпитаксиальных точек [15] и QWs [16]. Теоретическое описание FRET в рамках существующих модельных представлений и необходимые ссылки могут быть найдены в работе [17].…”

Section: Introductionunclassified

Резонансный Перенос Энергии В Плотном Массиве II-VI Квантовых Точек

Шубина¹,

Беляев²,

Семина³

et al. 2016

Физика Твердого Тела

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Методами спектроскопии фотолюминесценции с временным и пространственным разрешением продемонстрирован ферстеровский резонансный перенос энергии в неоднородных плотных массивах эпитаксиальных квантовых точек CdSe/ZnSe, отличительной чертой которого является диполь-дипольное взаимодействие между основными экситонными уровнями маленьких квантовых точек и возбужденными уровнями больших точек, приводящее к эффективному сбору энергии и спектральной селекции ограниченного числа излучателей. Результаты теоретического моделирования оптических переходов в сфероидных квантовых точках с гауссовым потенциальным профилем согласуются с наблюдаемыми особенностями в оптических спектрах, вызванными изменением доминирующего механизма переноса энергии. Работа выполнена при поддержке Российского научного фонда (проект N 14-22-00107).

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“…There are several conditions, which should be satisfied in such hybrids: (i) the QW emission and the fluorescent film absorption should overlap and (ii) the interaction distance (barrier thickness) between two materials should be comparable with the QW exciton Bohr radius. The efficiency of NRET can be estimated from the quenching of the QW exciton lifetime in the presence of colloidal nanocrystals (NCs) or polyfluorene [2,3]. The bottleneck is that the degradation of polyfluorene films and/or an interface region limits the operation time of hybrid LED structures.…”

Section: Introductionmentioning

confidence: 99%

“…Novel hybrid light emitting diodes (LEDs) designed to utilize non-radiative (Förster) resonant energy transfer (NRET) from excitation generated in inorganic III-N quantum wells (QW) to excitons in organic films or colloidal nanostructures might have a better efficiency compared to common hybrid LEDs [1,2]. There are several conditions, which should be satisfied in such hybrids: (i) the QW emission and the fluorescent film absorption should overlap and (ii) the interaction distance (barrier thickness) between two materials should be comparable with the QW exciton Bohr radius.…”

Section: Introductionmentioning

confidence: 99%

Time-resolved photoluminescence properties of hybrids based on inorganic AlGaN/GaN quantum wells and colloidal ZnO nanocrystals

Forsberg

Hemmingsson

Amano

et al. 2015

Superlattices and Microstructures

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Dynamic properties are studied for the AlGaN/GaN quantum well (QW) structures with and without the coating of colloidal ZnO nanocrystals (NCs). The QW exciton recombination rate was reduced in such hybrids compared to the bare QW structure only in the sample with the thinnest cap layer of 3 nm. Assuming that one of the recombination mechanisms in this hybrid is non-radiative resonant energy transfer (NRET) between the QW and the energy acceptor material i.e. ZnO NCs, the maximum pumping efficiency was estimated to be 42% at 60 K. The NRET effect is, however, vanished after several months despite that the hybrid structures are composed of chemically stable components.

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Dependence of Resonance Energy Transfer on Exciton Dimensionality

Cited by 45 publications

References 19 publications

Nonradiative and radiative Förster energy transfer between quantum dots

Nonradiative and radiative Förster energy transfer between quantum dots

Резонансный Перенос Энергии В Плотном Массиве II-VI Квантовых Точек

Time-resolved photoluminescence properties of hybrids based on inorganic AlGaN/GaN quantum wells and colloidal ZnO nanocrystals

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