Enhancing plasmonic hot-carrier generation by strong coupling of multiple resonant modes

Wong, Yat Lam; Jia, Huaping; Jian, Aoqun; Lei, Dangyuan; Abed, Abdel I. El; Zhang, Xuming

doi:10.1039/d0nr07643k

Cited by 15 publications

(11 citation statements)

References 49 publications

(60 reference statements)

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“…Although PHET has been demonstrated useful for the application of plasmon-assisted photocatalysis and photovoltaics, − the direct observation of PHET is rarely reported . In this work, the Coulomb repulsion occurs in the QD assembly when a QD in its ground state is closely surrounded by excited or charged QDs.…”

Section: Resultsmentioning

confidence: 94%

Bright CdSe/CdS Quantum Dot Light-Emitting Diodes with Modulated Carrier Dynamics via the Local Kirchhoff Law

Wang

Guo

Hao

et al. 2021

ACS Appl. Mater. Interfaces

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Addressing the interactions between optical antennas and ensembles of emitters is particularly challenging. Charge transfer and Coulomb interactions complicate the understanding of the carrier dynamics coupled by antennas. Here, we show how Au antennas enhance the luminescence of CdSe/CdS quantum dot assemblies through carrier dynamics control within the framework of the local Kirchhoff law. The Au antennas inject hot electrons into quantum dot assemblies via plasmon-induced hot electron transfer that increases the carrier concentration. Also, the localized surface plasmon resonances of Au antennas favorably tilt the balance between nonradiative Auger processes and radiative recombination in the CdSe core. Eventually, a high bright (125,091.6 cd/m2) deep-red quantum dot light-emitting diode is obtained by combining with Au antennas. Our findings suggest a new understanding of light emission of assembled emitters coupled by antennas, which is of essential interest for the description of light–matter interaction in advanced optoelectronics.

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Section: Resultsmentioning

confidence: 94%

Bright CdSe/CdS Quantum Dot Light-Emitting Diodes with Modulated Carrier Dynamics via the Local Kirchhoff Law

Wang

Guo

Hao

et al. 2021

ACS Appl. Mater. Interfaces

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“…Gap-mode plasmonic nanocavity has excellent tunability for the plasmon resonance frequency or the “hot spot” position by adjusting the size, separation, or shape of system structure 8 , 9 , which can conveniently achieve the maximum overlap of spectral between the plasmon and emitters. A typical light-matter interaction, localized surface plasmon resonance, can generate a strong non-uniform electromagnetic field, resulting in many different phenomena, such as surface-enhanced Raman scattering 10 – 12 , enhanced fluorescence 13 – 15 , and strong coupling 16 – 19 .…”

Section: Introductionmentioning

confidence: 99%

Manipulating the light-matter interactions in plasmonic nanocavities at 1 nm spatial resolution

et al. 2022

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The light-matter interaction between plasmonic nanocavity and exciton at the sub-diffraction limit is a central research field in nanophotonics. Here, we demonstrated the vertical distribution of the light-matter interactions at ~1 nm spatial resolution by coupling A excitons of MoS2 and gap-mode plasmonic nanocavities. Moreover, we observed the significant photoluminescence (PL) enhancement factor reaching up to 2800 times, which is attributed to the Purcell effect and large local density of states in gap-mode plasmonic nanocavities. Meanwhile, the theoretical calculations are well reproduced and support the experimental results.

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“…[94] Copyright 2010, American Chemical Society. Sub-100 nm [ 106] Flexible, low cost, and extremely high throughput Inevitable defects Nanoparticle, [ 107] triangular particle, [ 108] nanohole, [109][110][111] nanodisk, [85] nanobowl, [ 112,113] nanoring, [ 114] half-shell, [ 115] nanocone, [ 34,86] and nanopyramids [ 116,117] 0D 2D 3D…”

Section: Nanosphere Lithographymentioning

confidence: 99%

Metallic Plasmonic Nanostructure Arrays for Enhanced Solar Photocatalysis

Jia

Tsoi

Abed

et al. 2023

Laser & Photonics Reviews

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Plasmon-enhanced photocatalysis has emerged as a promising technology for solar-to-chemical energy conversion. Compared to isolated or disordered metal nanostructures, by controlling the morphology, composition, size, spacing, and dispersion of individual nanocomponents, plasmonic nanostructure arrays with coupling architectures yield strong broadband light-harvesting capability, efficient charge transfer, enhanced local electromagnetic fields, and large contact interfaces. Although metallic nanostructure arrays are extensively studied for various applications, such as refractive index sensing, surface-enhanced spectroscopy, plasmon-enhanced luminescence, plasmon nanolasing, and perfect light absorption, the connection between surface plasmon resonance and enhanced photocatalysis remains relatively unexplored. In this study, an overview of plasmonic nanostructure arrays over a broad range, from 0D to 3D, for efficient photocatalysis is presented. By reviewing the fundamental mechanisms, recent applications, and latest developments of plasmonic nanostructure arrays in solar-driven chemical conversion, this study reports on the latest guidance toward the integration of plasmonic nanostructures for functional devices in the fields of plasmonic, photonics, photodetection, and solar-energy harvesting.

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Enhancing plasmonic hot-carrier generation by strong coupling of multiple resonant modes

Abstract: Plasmonic hot-carrier generation can be harnessed by the strong coupling of the cavity mode, the LSPR mode, and the gap surface plasmon polariton.

Cited by 15 publications

References 49 publications

Bright CdSe/CdS Quantum Dot Light-Emitting Diodes with Modulated Carrier Dynamics via the Local Kirchhoff Law

Bright CdSe/CdS Quantum Dot Light-Emitting Diodes with Modulated Carrier Dynamics via the Local Kirchhoff Law

Manipulating the light-matter interactions in plasmonic nanocavities at 1 nm spatial resolution

Metallic Plasmonic Nanostructure Arrays for Enhanced Solar Photocatalysis

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