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Electrical enhanced hot holes driven oxidation catalysis on the interface of plasmon-exciton hybrid

Abstract

In this paper, the electro-optical device based on graphene-Ag nanoparticles hybrid is fabricated as the substrate of graphene mediated surface enhanced Raman scattering (G-SERS) manipulated by gate and bias voltages. The plasmon-exciton coupling interactions promote the co-driven surface catalytic reaction, where the density of state (DOS) of holes and electrons on graphene are well controlled by gate voltages, and the kinetic energy of holes and electrons are prompted by the bias voltages (or current). Our experimental results reveal that the hot holes on graphene are mainly contributed to the plasmon-exciton co-driven oxidized reaction. The contribution of hot electrons to oxidized reaction is less important. Our novel electro-optical device can be potentially applied in controlling plasmon-exciton co-driven oxidized or reduced reaction by tuning the gate voltages and bias voltages.

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Publication details

The article was received on 28 Nov 2017, accepted on 09 Feb 2018 and first published on 09 Feb 2018


Article type: Paper
DOI: 10.1039/C7NR08878G
Citation: Nanoscale, 2018, Accepted Manuscript
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    Electrical enhanced hot holes driven oxidation catalysis on the interface of plasmon-exciton hybrid

    W. Lin, E. Cao, L. Zhang, X. Xu, Y. Song, W. Liang and M. Sun, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C7NR08878G

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