Ultrahigh Field Enhancement and Photoresponse in Atomically Separated Arrays of Plasmonic Dimers

Paria, Debadrita; Roy, Kallol; Singh, Haobijam Johnson; Kumar, Shishir; Raghavan, Srinivasan; Ghosh, Arindam; Ghosh, Ambarish

doi:10.1002/adma.201404312

Cited by 64 publications

(74 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…22,23,24,25,26,27,28,29,30,31 In particular, we first explore the real-space formulation 21,32 and numerical implementations 33 of the long-existing nonlocal hydrodynamic theory. 34,35,36,37 We then address a recent extension of this theory which accounts for drift-diffusion dynamics, namely the generalized nonlocal optical response (GNOR) theory.…”

Section: 17mentioning

confidence: 99%

On the origin of nonlocal damping in plasmonic monomers and dimers

Tserkezis

Yan

Hsieh

et al. 2017

Int. J. Mod. Phys. B

View full text Add to dashboard Cite

The origin and importance of nonlocal damping is discussed through simulations with the generalized nonlocal optical response (GNOR) theory, in conjunction with timedependent density-functional-theory (TDDFT) calculations and equivalent circuit modeling, for some of the most typical plasmonic architectures: metal-dielectric interfaces, metal-dielectric-metal gaps, spherical nanoparticles, and nanoparticle dimers. It is shown that diffusive damping, as introduced by the convective-diffusive GNOR theory, describes well the enhanced losses and plasmon broadening predicted by ab initio calculations in few-nm particles or few-to-sub-nm gaps. Through the evaluation of a local effective dielectric function, it is shown that absorptive losses appear dominantly close to the metal surface, in agreement with TDDFT and the mechanism of Landau damping due to generation of electron-hole pairs near the interface. Diffusive nonlocal theories provide therefore an efficient means to tackle plasmon damping when electron tunneling can be safely disregarded, without the need to resort to more accurate, but time-consuming fully quantum-mechanical studies.

show abstract

Section: 17mentioning

confidence: 99%

On the origin of nonlocal damping in plasmonic monomers and dimers

Tserkezis

Yan

Hsieh

et al. 2017

Int. J. Mod. Phys. B

View full text Add to dashboard Cite

show abstract

“…Optical Mater. 2020, 8,1901519 www.advopticalmat.de illumination, Au-NPs are coupled with their image charges formed in the Au electrode, and the resultant gap-mode plasmonic field enhancement substantially increases the light absorption of graphene. Because the gap-mode plasmon is formed vertically through a thin, constant thickness of MLG, the plasmon resonance intensity is strong and quite uniform.…”

Section: Resultsmentioning

confidence: 99%

“…Optical Mater. 2020, 8,1901519 www.advopticalmat.de dipoles between Au-NPs and their image charges mirrored by the top metal electrode. [19] Figure 1c shows the current-voltage (I-V) characteristics measured with and without laser illumination.…”

Section: Figure 1amentioning

confidence: 99%

See 1 more Smart Citation

Gap‐Mode Plasmon‐Induced Photovoltaic Effect in a Vertical Multilayer Graphene Homojunction

Lee

Kwon

Kim

et al. 2019

Advanced Optical Materials

View full text Add to dashboard Cite

Gap‐mode plasmons that occur between metallic nanoparticles and metallic films separated by a thin spacer have been widely studied in the field of nano‐optics and plasmonics for enhancing the light–matter interaction of graphene and other two‐dimensional (2D) materials. However, efficient photovoltaic devices using such gap‐mode plasmons have not been achieved because of structural difficulties. Here, a gap‐mode plasmon‐induced asymmetric vertical homojunction photovoltaic device using multilayer graphene is presented. In this structure, the multilayer graphene acts both as a photo‐carrier generation layer and as a spacer for the gap‐mode plasmon. The optical absorption of graphene is further enhanced by the presence of gap‐mode plasmons, and the photoresponse time is extremely short because of the atomically short channel lengths across the vertical direction. The wavelength dependence of the gap‐mode plasmon is also investigated for three devices with different metal electrodes by photocurrent measurement at five different wavelengths and numerical simulations. The device strategies implemented in this work can enhance the performance of graphene‐based vertical photonic devices and can be applied to other 2D materials‐based photonic devices.

show abstract

“…The novelty of this work is that, graphene acts as a perfect spacer in the device to produce almost 1 million times higher electromagnetic field enhancement between the nanoparticles, thus enormously boosting the light-matter interaction, which is greatly beneficial for solar cell applications [16].…”

mentioning

confidence: 99%

Graphene Solar Cells-Will it be the Ultimate Power Converter?

Banerjee¹

2015

Int J Nanomater Nanotechnol Nanomed

View full text Add to dashboard Cite

Ultrahigh Field Enhancement and Photoresponse in Atomically Separated Arrays of Plasmonic Dimers

Cited by 64 publications

References 56 publications

On the origin of nonlocal damping in plasmonic monomers and dimers

On the origin of nonlocal damping in plasmonic monomers and dimers

Gap‐Mode Plasmon‐Induced Photovoltaic Effect in a Vertical Multilayer Graphene Homojunction

Graphene Solar Cells-Will it be the Ultimate Power Converter?

Contact Info

Product

Resources

About