Plasmonic Light-Harvesting Devices over the Whole Visible Spectrum

Aubry, Alexandre; Lei, Dangyuan; Fernández‐Domínguez, Antonio I.; Sonnefraud, Yannick; Maier, Stefan A.; Pendry, J. B.

doi:10.1021/nl101235d

Cited by 351 publications

(397 citation statements)

References 35 publications

(74 reference statements)

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“…One can see that the bluntness of the structure singularities does not change significantly the cutoff absorption behavior for large overlap distances ( Ն 0.5), which means that our theory initially developed for perfect overlapping nanowires is still effective in this case. The discrepancy between simulation and theory for the smaller overlap distance ( ϭ 0.2) is explained by the fact that the response of overlapping nanowires at low frequencies ( Ͻ 0.5 sp ) relies on very sharp geometric features: the field is much more confined at low frequencies 6 and any slight deviation from the initial geometry may prevent surface plasmons from being excited. Hence, if we want plasmonic devices efficient in the red part of the visible spectrum, strong constrains have to be imposed on the nanofabrication process.…”

Section: Inside the Cylinders)mentioning

confidence: 91%

Plasmonic Interaction between Overlapping Nanowires

et al. 2010

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The plasmonic interaction between overlapping nanowires with and without structure singularities is studied analytically and numerically. A conformal transformation approach is adopted to predict analytically the optical response of overlapping nanowires in the quasi-static limit. Surface plasmon excitations are shown to exhibit a lower bound cutoff frequency, which blue-shifts when the overlap distance increases. Between this cutoff and the surface plasmon frequencies, overlapping nanowires are capable of a strong and broad-band harvesting of light. This band gap feature is shown to be robust to radiative losses and to the bluntness of the structure singularities. Hence, the light harvesting performance of overlapping nanowires would not be damaged by nanofabrication imperfections. These remarkable features might be beneficial to the realization of plasmonic band gap filters.

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Section: Inside the Cylinders)mentioning

confidence: 91%

Plasmonic Interaction between Overlapping Nanowires

et al. 2010

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“…If F g < 1, the spontaneous emission rate is inhibited; otherwise, the cavity enhances the emission. This formula of Equation (29) shows that the optical resonator can significantly increase the emission rate while compressing the light to a small range and storing it for a long time [155,156]. However, the realization of these two goals in the strict sense is contradictory, because the tighter confinement is always accompanied by high losses.…”

Section: Weak Coupling Conditions Of Cavity-qedmentioning

confidence: 99%

Exciton-plasmon coupling interactions: from principle to applications

et al. 2017

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Abstract:The interaction of exciton-plasmon coupling and the conversion of exciton-plasmon-photon have been widely investigated experimentally and theoretically. In this review, we introduce the exciton-plasmon interaction from basic principle to applications. There are two kinds of exciton-plasmon coupling, which demonstrate different optical properties. The strong exciton-plasmon coupling results in two new mixed states of light and matter separated energetically by a Rabi splitting that exhibits a characteristic anticrossing behavior of the exciton-LSP energy tuning. Compared to strong coupling, such as surface-enhanced Raman scattering, surface plasmon (SP)-enhanced absorption, enhanced fluorescence, or fluorescence quenching, there is no perturbation between wave functions; the interaction here is called the weak coupling. SP resonance (SPR) arises from the collective oscillation induced by the electromagnetic field of light and can be used for investigating the interaction between light and matter beyond the diffraction limit. The study on the interaction between SPR and exaction has drawn wide attention since its discovery not only due to its contribution in deepening and broadening the understanding of SPR but also its contribution to its application in light-emitting diodes, solar cells, low threshold laser, biomedical detection, quantum information processing, and so on.

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“…Beyond simple spheres and rods, many other shapes have been fabricated, as for example nanoshells, 8 nanorings 9 and cylinders with crescent shaped cross sections. 10 Furthermore, coupling of many antennas into dimer, trimers, etc.., can give rise to a novel collective response, as in metamaterials based on arrays of parallel nanorods. 11 When small metallic particles are coupled together, their optical modes hybridise due to neareld interactions and the resulting energy levels shi and split in analogy to molecular orbital formation.…”

Section: Introductionmentioning

confidence: 99%

Percolating plasmonic networks for light emission control

et al. 2015

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Optical nanoantennas have revolutionised the way we manipulate single photons emitted by individual light sources in a nanostructured photonic environment. Complex plasmonic architectures allow for multiscale light control by shortening or stretching the light wavelength for a fixed operating frequency, meeting the size of the emitter and that of propagating modes. Here, we study self-assembled semi-continuous gold films and lithographic gold networks characterised by large local density of optical state (LDOS) fluctuations around the electrical percolation threshold, a regime where the surface is characterised by large metal clusters with fractal topology. We study the formation of plasmonic networks and their effect on light emission from embedded fluorescent probes in these systems. Through fluorescence dynamics experiments we discuss the role of global long-range interactions linked to the degree of percolation and to the network fractality, as well as the local near-field contributions coming from the local electro-magnetic fields and the topology. Our experiments indicate that local properties dominate the fluorescence modification.

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Plasmonic Light-Harvesting Devices over the Whole Visible Spectrum

Cited by 351 publications

References 35 publications

Plasmonic Interaction between Overlapping Nanowires

Plasmonic Interaction between Overlapping Nanowires

Exciton-plasmon coupling interactions: from principle to applications

Percolating plasmonic networks for light emission control

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