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Hot electron science and microscopic processes in plasmonics and catalysis

Abstract

In this lecture we discuss the generation of nonequilibrium electrons in metals, their properties, and how they can be utilized in two emerging applications: for extending the capabilities of photodetection, and for photocatalysis: lowering the barriers of chemical reactions. Because direct illumination of noble/coinage metal nanoparticles results in the excitation of their localized surface plasmons, these nanostructures can serve as active optical antennas, central to the goal of efficient hot electron generation to drive these processes. Currently, noble/coinage metal nanoparticles are being supplemented by earth-abundant, sustainable alternatives. Here we discuss how active optical antennas can expand the wavelength accessibility and alter the properties of traditional photoconductive detectors in new ways. We also examine how active optical antennas, when combined with conventional catalytic nanoparticles in an integrated manner, can convert catalysts into photocatalysts to change chemical product specificities and even alter chemical reaction pathways.

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Publication details

The article was accepted on 31 Jan 2019 and first published on 31 Jan 2019


Article type: Paper
DOI: 10.1039/C9FD00001A
Citation: Faraday Discuss., 2019, Accepted Manuscript

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    Hot electron science and microscopic processes in plasmonics and catalysis

    N. J. Halas, Faraday Discuss., 2019, Accepted Manuscript , DOI: 10.1039/C9FD00001A

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