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- W3133797369 abstract "Surface plasmon enhanced processes and hot-carrier dynamics in plasmonic nanostructures are of great fundamental interest to reveal light-matter interactions at the nanoscale. Using plasmonic tunnel junctions as a platform supporting both electrically- and optically excited localized surface plasmons, we report a much greater (over 1000x) plasmonic light emission at upconverted photon energies under combined electro-optical excitation, compared with electrical or optical excitation separately. Two mechanisms compatible with the form of the observed spectra are interactions of plasmon-induced hot carriers and electronic anti-Stokes Raman scattering. Our measurement results are in excellent agreement with a theoretical model combining electro-optical generation of hot carriers through non-radiative plasmon excitation and hot-carrier relaxation. We also discuss the challenge of distinguishing relative contributions of hot carrier emission and the anti-Stokes electronic Raman process. This observed increase in above-threshold emission in plasmonic systems may open avenues in on-chip nanophotonic switching and hot carrier photocatalysis." @default.
- W3133797369 created "2021-03-15" @default.
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- W3133797369 date "2021-03-12" @default.
- W3133797369 modified "2023-10-15" @default.
- W3133797369 title "Thousand-fold Increase in Plasmonic Light Emission via Combined Electronic and Optical Excitations" @default.
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- W3133797369 doi "https://doi.org/10.1021/acs.nanolett.1c00503" @default.
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