Nonradiative energy transfer in a layered metal-dielectric nanostructure mediated by surface plasmons

Golmakaniyoon, Sepideh; Demir, Hilmi Volkan; Sun, Xiao Wei

doi:10.1117/12.2187970

Cited by 2 publications

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References 9 publications

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“…Published by AIP Publishing. [http://dx.doi.org/10.1063/ 1.4985337] In recent years, planar plasmonic nanostructures have attracted increasing attention thanks to their crucial role in the theoretical comprehension of surface enhanced fluorescence (SEF), 1 along with their wide applications in plasmonic waveguided mode nanostructures, 2 Raman scattering spectroscopy, [3][4][5] colour filters, 6,7 energy transfer, [8][9][10][11] and light-emitting and -harvesting devices. [12][13][14][15][16][17] It has been well understood that excitation of the surface plasmon (SP) modes at the surface of a metal gives rise to optical behaviour modification of a molecule in the vicinity of the metal surface due to the large enhancement of the local electromagnetic field.…”

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confidence: 99%

Spectral tunability and enhancement of molecular radiative emission by metal-dielectric-metal stratified plasmonic nanostructure

Golmakaniyoon

Hernández‐Martínez

Demir

et al. 2017

Applied Physics Letters

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Plasmonic nanostructures have been widely known for their notable capability to enhance spontaneous emission of an electric dipole in their vicinity. Due to the availability of large optical density of states at their metallic surface, the radiative and nonradiative decay channels are dramatically modified. However, enhancement cannot be realized for any desired emissive dipole as the plasmonic resonance frequency is mostly determined intrinsically by the existing plasmonic materials. Although recent studies using metamaterial structures demonstrate a promising approach of tuning the Purcell factor across the emission wavelength, many of the demonstrations lack efficient radiative emission besides the fabrication complexity. Here, we show theoretically and experimentally that a simple metal-dielectric-metal stratified architecture allows for high tunability of the resonance frequency to obtain a maximum radiative decay rate for any desired dipole peak emission wavelength. Owing to the effective cascaded plasmonic mode coupling across the metal-dielectric interfaces, the proposed approach uniquely provides us with the ability to optimize the plasmonic nanostructure for 100% radiative transmission and 3-fold radiative emission enhancement.

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confidence: 99%

Spectral tunability and enhancement of molecular radiative emission by metal-dielectric-metal stratified plasmonic nanostructure

Golmakaniyoon

Hernández‐Martínez

Demir

et al. 2017

Applied Physics Letters

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“…This process arises from large spontaneous emission enhancement of a donor dipole in front of metallic surface, in which the virtual photons are absorbed by surface plasmon modes of the metal surface. We believe that unlike the plasmonenhanced FRET mechanism in semiconductor-metal nanoparticles system, the possibility of direct FRET from donor to the acceptor in planar nanostructure is thin enough to disregard it, however the accuracy of this claim has been observed in several works [20,46,47,60]. For this reason, at the first step of ET from donor dipole to the plasmonic layer, the presence of FRET between donor-acceptor dipoles has been considered impracticable and all the donor dipole decay channels modifications take place due to the solo effect of metallic surface plasmon modes.…”

Section: Two-step Modelmentioning

confidence: 96%

Surface plasmon mediated nonradiative energy transfer and enhanced radiative emission in stratified planar nanostructures

Golmakaniyoon¹

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Planar plasmonic nanostructures have gained considerable attention due to their crucial role in the theoretical comprehension of surface enhanced fluorescent along with their wide applications in nonradiative energy transfer (NRET), plasmonic wave guided mode, Raman scattering spectroscopy, color filters, light emitting and light harvesting devices. With the availability of large density of states at the metallic surface, the radiative and nonradiative decay channels of an electric dipole in a vicinity of metal would be dramatically modified. However, the radiative enhancement cannot be realized for any desired emissive dipole as the existing plasmonic resonance frequency is limited to the well-known plasmonic materials. Despite the fact that recent studies in metamaterial structures demonstrate a promising approach of tuning Purcell factor across the emission wavelength, the structures still suffer from an inefficient radiative emission. Moreover, in the case of nonradiative energy transfer, the conventionally sandwiched donor-metal film-acceptor configurations lack the desired efficiency and suffer poor photoemission due to the high energy loss. In this dissertation, we propose and demonstrate the nonradiative energy transfer mechanism between the donor and the acceptor through multi-layered metallic nanostructuresstratified configuration, in which an efficient energy transfer can be realized. This novel approach in NRET uniquely provides us with the ability to overcome the drawback of high energy absorption losses in a thick metal film by

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Nonradiative energy transfer in a layered metal-dielectric nanostructure mediated by surface plasmons

Cited by 2 publications

References 9 publications

Spectral tunability and enhancement of molecular radiative emission by metal-dielectric-metal stratified plasmonic nanostructure

Spectral tunability and enhancement of molecular radiative emission by metal-dielectric-metal stratified plasmonic nanostructure

Surface plasmon mediated nonradiative energy transfer and enhanced radiative emission in stratified planar nanostructures

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