Erratum: Experimental verification of Förster energy transfer between semiconductor quantum dots [Phys. Rev. B<b>78</b>, 153301 (2008)]

Kim, DaeGwi; Okahara, Shinya; Nakayama, Masaaki; Shim, YongGu

doi:10.1103/physrevb.78.239901

Cited by 25 publications

(38 citation statements)

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“…30,33 Moreover, in bilayer structures, the rate because of the plane-to-plane interaction is known to be proportional to R −4 . 32,35 Therefore, the energy transfer is not the major factor for the fast response.…”

Section: -6mentioning

confidence: 99%

“…The resonant energy transfer was focused on as a method for increasing the decay rate, [30][31][32][33][34][35][36] in particular, on the cyanine molecule thin films. 37,38 The energy transfer causes ultrafast relaxation of the lowest excited states with a decrease in the distance between the energy donor and the acceptor molecules, which enables high repetition operation without the pattern effect.…”

Section: Introductionmentioning

confidence: 99%

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Increase in exciton decay rate due to plane-to-plane interaction between cyanine thin films

2016

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Increase in exciton decay rate due to planeto-plane interaction between cyanine thin filmsWe report an increase in exciton decay rates because of long-range interaction based on surface charge between cyanine thin films. The dependence of the decay rate on the spatial separation between the cyanine molecule layers shows that the rate is almost constant, which is different from the well-known energy transfer process. The rate is hardly affected by the fluctuation of the film thickness,

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Section: -6mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Increase in exciton decay rate due to plane-to-plane interaction between cyanine thin films

2016

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“…15 Numerous reports have been published on energy transfer in QD structures formed using these techniques among others. [16][17][18][19][20][21][22][23] To date there have been only a few reports investigating the influence of the QD concentration on the optical properties and/or energy transfer in monodispersed QD layers, 16 even though they are the fundamental building blocks of many of the systems and devices highlighted above. It is important to consider the QD concentration when comparing the results reported in different publications; its impact on the signal levels, outcome of measurements and performance of devices has to be determined and taken into account.…”

Section: Introductionmentioning

confidence: 99%

“…[31][32][33] Artificially designed microparticles and nanoparticles with multiple functionality can be synthesized with the help of the LbL technique and have been proposed for applications in areas such as quantum-information processing, optoelectronics, or biotechnology. [34][35][36] As the LbL deposition allows for the positioning of layers in nanometer steps, it is also beneficial for the investigation of energy transfer processes 17,19,21,22 as well as the interaction of surface plasmons with QDs. [37][38][39] Previous research reported in the literature has shown that nanocrystal to nanocrystal energy transfer can be appropriately described using Förster resonant energy transfer theory despite the inhomogeneous broadening of the QD ensembles and their relatively large size compared to the typical Förster radii of 2-10 nm.…”

Section: Introductionmentioning

confidence: 99%

Influence of quantum dot concentration on Förster resonant energy transfer in monodispersed nanocrystal quantum dot monolayers

et al. 2010

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The quantum dot ͑QD͒ concentration dependence of the optical properties of QD monolayers is shown to be dominated by Förster resonant energy transfer ͑FRET͒ from smaller to larger QDs in the ensemble. With increasing QD concentration a redshift of the peak emission wavelength, a shortening of the photoluminescence lifetime of the QDs on the high-energy side of the ensemble emission spectrum as well as increased difference in the lifetimes on the high-and low-energy sides are observed in the layer-by-layer deposited QD monolayers. There is also evidence of an increased rise time in the time-resolved photoluminescence decays on the low-energy side of the QD emission for two of the three samples presented in most detail. A theory of FRET in two dimensions is applied to explain the lifetime decrease on the high-energy side of the ensemble emission and confirms that the impact of the QD concentration on the optical properties is primarily due to FRET from the smaller to larger QDs in the ensemble. The concentration effects are stronger in QD samples which have a broader emission peak compared to the Stokes shift. Based on good agreement with FRET theory, the QD concentration and the overlap of the QD emission and absorption peaks can both be used to control the efficiency of the FRET process in monodispersed QD layers.

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“…Both equations are a product of two terms: one dealing primarily with the description of the system (ζ in this paper or J 2 for Förster theory), and another largely depending on and arising from the systembath interaction (C(ω) in this paper or I for Förster theory). Förster theory has been applied in fluorescence resonance energy transfer (FRET) to design chromophores for biosensing assays [2,26,27] and was recently verified experimentally for semiconductor QDs [28]. We use the simple structure of Eq.…”

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Engineering directed excitonic energy transfer

Perdomo

Vogt

Najmaie

et al. 2010

Applied Physics Letters

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We provide an intuitive platform for engineering exciton transfer dynamics. We show that careful consideration of the spectral density, which describes the system-bath interaction, leads to opportunities to engineer the transfer of an exciton. Since excitons in nanostructures are proposed for use in quantum information processing and artificial photosynthetic designs, our approach paves the way for engineering a wide range of desired exciton dynamics. We carefully describe the validity of the model and use experimentally relevant material parameters to show counter-intuitive examples of a directed exciton transfer in a linear chain of quantum dots.The widely-applied Förster theory for energy transfer links experimental results to estimates of system information, particularly in biological and nanoscale applications [1,2]. The usefulness of this theory is partly due to the simple expression of the kinetic rate constants as a product of electronic coupling and a spectral overlap factor which captures the complexity of the environment. Förster theory describes transport in the incoherent limit, but a complementary and more elaborate approach, such as Redfield theory, is often required to describe energy transfer. However, the information essential to understanding the dynamics is buried within the structure of the equations. In this letter, we employ a quantum kinetic rate approach to distill the information contained in equations into a simple, yet instructive, formula. We use this approach to design directed exciton transfer mediated by an environment.Excitonic energy transfer (EET) has been studied in systems as varied as quantum dot (QD) nanostructures [3,4], polymer chains [5], and photosynthetic complexes [6,7]. Many applications of EET would benefit from controlling exciton dynamics. Perfect state transfer, as studied in the quantum computing community, is achievable in certain engineered systems, but only at particular times during coherent evolution [8]. Recent works have shown that environment-induced decoherence can alter exciton dynamics [9][10][11], although controlling the transfer direction has only been achieved using external potentials [12]. Our paper builds upon the idea of engineering exciton transfer by designing appropriate system-bath interactions [13,14]. We show that it is possible to design experimentally realizable systems where the environment can be used to direct the flow of energy.The Hamiltonian used in our simulation aims to capture dynamics in a single-exciton manifold [15] interacting with an environment,This representation is in the site basis {|s n } of localized excitations on each of N sites, (e.g. QDs or chromophores), with excitation energy E n for each site and inter-site coupling J mn . The environment is described by a phonon bath,Ĥwhere b † q (b q ) is the creation (destruction) operator for a phonon with wavevector q. The system-bath interaction is assumed to be linear,where g n q describes the site-specific coupling of electronic and vibrational degrees of freedom. We ...

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Erratum: Experimental verification of Förster energy transfer between semiconductor quantum dots [Phys. Rev. B78, 153301 (2008)]

Cited by 25 publications

References 0 publications

Increase in exciton decay rate due to plane-to-plane interaction between cyanine thin films

Increase in exciton decay rate due to plane-to-plane interaction between cyanine thin films

Influence of quantum dot concentration on Förster resonant energy transfer in monodispersed nanocrystal quantum dot monolayers

Engineering directed excitonic energy transfer

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