On the Plasmonic Properties of Ag@SiO2@Graphene Core-Shell Nanostructures

Sun, Cheng

doi:10.1007/s11468-017-0676-0

Cited by 25 publications

(7 citation statements)

References 32 publications

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“…They demonstrated that the plasmon resonance frequency and other plasmonic properties can be controlled by the geometrical parameters of NPs. In another study, Sun [40] studied the plasmonic properties of the Ag@SiO 2 @Graphene core-shell NPs in the wavelength range of 300 nm-2000 nm. The graphene shell will have induced plasmon resonance at 1160 nm, which can be adjusted by the chemical potential of graphene.…”

Section: Introductionmentioning

confidence: 99%

Broadband plasmonic absorption enhancement of perovskite solar cells with embedded Au@SiO₂@graphene core–shell nanoparticles

Talebi¹,

Emami²

2022

Semicond. Sci. Technol.

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Although perovskite solar cells have shown outstanding photovoltaic performance, there are still various obstacles that limit their performance and that remain as significant challenges. Weak optical absorption rate in the infrared region is a significant drawback for this kind of solar cell. In this paper, Au@SiO2@Graphene nanoparticles (NPs) as nano-photonic inclusions in the perovskite layer are proposed and investigated theoretically. Unlike conventional nanoparticles, these NPs exhibit strong, multiple plasmon resonances at low energies. The effect of geometrical parameters, periodicity, and the location of the Au@SiO2@Graphene NPs in the perovskite layer upon the performance of the PSCs are investigated. Under improved conditions, an absorption enhancement of 32% is obtained compared to pristine devices. Also, the result attained from coupled optical-electrical simulation of the improved device demonstrated 20.05% power conversion efficiency. These improvements have been achieved due to the plasmonic near-field enhancement effects of Au@SiO2@Graphene nanoparticles along with increased light-scattering from these NPs.

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Section: Introductionmentioning

confidence: 99%

Broadband plasmonic absorption enhancement of perovskite solar cells with embedded Au@SiO₂@graphene core–shell nanoparticles

Talebi¹,

Emami²

2022

Semicond. Sci. Technol.

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“…In 1961, U. Fano derived a theoretical formula to successfully fit the lineshape of the He spectrum obtained from the electron inelastic scattering experiment [1]. The Fano model was later extended to several other quantum systems with resonance scattering effects, and the Fano lineshape function was employed in many cases [2,3,4,5,6,7]. In general quantum systems, Fano resonance occurs when interference between a discrete state and a continuum is established, accompanied with asymmetric peaks in excitation spectra [8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the fano lineshapes in plasmonic asymmetric silver nanosphere dimer

Dong²,

Xiong³

et al. 2022

Opt Quant Electron

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The plasmonic properties of an asymmetric dimer, comprising of two silver nanospheres with different radii, are studied by the finite difference time domain method. The extinction efficiencies of the plasmonic dimer are numerically calculated in the visible and near-infrared regime, i.e., from 950THz to 150THz. Two distinguishable Fano resonances are observed when the separation between the nanospheres is narrowed within a certain value, e.g., less than 10nm. The extinction spectrum that presents two Fano resonances, associated with two electromagnetic modes, is well fitted using a model consisting of two Fano lineshape functions. The resonance frequencies, the spectral widths, and the characteristic q values are obtained via the best fit parameters, and their trends are revealed with varying the radii of the nanospheres. The fitting scheme proposed in this work may be useful in the study of other plasmonic nanostructures with multiple Fano resonances.

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“…The dimension dependent optical properties of spherical core-shell structures, which were composed of ZnO@Ag nanoparticles embedded in a dielectric matrix, were investigated; two sets of formants were found in different wavelength regions [11]. In addition, the plasmonic resonance wavelengths of the coreshell nanospheres based on silver and graphene were discussed [12,13]. Recently, the extinction spectra of silver nanoshells with different environmental media were also addressed [14].…”

Section: Introduction *mentioning

confidence: 99%

Investigation of Plasmonic Properties of a Rhodium Nanoshell Based Optical Nanomaterial

Jiang

Yue

Xiong

et al. 2022

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In noble metals, surface plasmons may be induced by incident light, resulting in good plasmonic properties that can be widely utilized. In this work, an optical nanomaterial based on a spherical nanoshell structure consisting of rhodium and dielectric is proposed. The scattering efficiency and electric field are calculated via the finite difference time domain method, by respectively varying the nanoparticle radius, the thickness of the nanoshell, as well as the dielectric material of the core. The results show that under certain conditions in the ultraviolet regime, two plasmonic resonance peaks are observed in the scattering spectrum, correlating to two different electromagnetic modes. It is also demonstrated that the resonance wavelengths and the peak intensities of the rhodium based optical nanomaterial can effectively be tuned by changing the structural parameters. The proposed rhodium-based nanomaterial may be useful in applications of optical devices in the ultraviolet regime.

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On the Plasmonic Properties of Ag@SiO2@Graphene Core-Shell Nanostructures

Cited by 25 publications

References 32 publications

Broadband plasmonic absorption enhancement of perovskite solar cells with embedded Au@SiO₂@graphene core–shell nanoparticles

Broadband plasmonic absorption enhancement of perovskite solar cells with embedded Au@SiO₂@graphene core–shell nanoparticles

Investigation of the fano lineshapes in plasmonic asymmetric silver nanosphere dimer

Investigation of Plasmonic Properties of a Rhodium Nanoshell Based Optical Nanomaterial

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On the Plasmonic Properties of Ag@SiO2@Graphene Core-Shell Nanostructures

Cited by 25 publications

References 32 publications

Broadband plasmonic absorption enhancement of perovskite solar cells with embedded Au@SiO2@graphene core–shell nanoparticles

Broadband plasmonic absorption enhancement of perovskite solar cells with embedded Au@SiO2@graphene core–shell nanoparticles

Investigation of the fano lineshapes in plasmonic asymmetric silver nanosphere dimer

Investigation of Plasmonic Properties of a Rhodium Nanoshell Based Optical Nanomaterial

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Broadband plasmonic absorption enhancement of perovskite solar cells with embedded Au@SiO₂@graphene core–shell nanoparticles

Broadband plasmonic absorption enhancement of perovskite solar cells with embedded Au@SiO₂@graphene core–shell nanoparticles