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Graphene-Supported Thin Metal Films for Nanophotonics and Optoelectronics

1
Center for Photonics & 2D Materials, Moscow Institute of Physics and Technology, 9 Institutsky Lane, Dolgoprudny 141700, Russia
2
GrapheneTek, 7 Nobel Street, Skolkovo Innovation Center, Moscow 143026, Russia
3
SDU Nano Optics, Mads Clausen Institute, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark
*
Author to whom correspondence should be addressed.
Nanomaterials 2018, 8(12), 1058; https://doi.org/10.3390/nano8121058
Received: 26 November 2018 / Revised: 9 December 2018 / Accepted: 11 December 2018 / Published: 15 December 2018
(This article belongs to the Special Issue Graphene-Based Nanostructures and Optoelectronic Applications)
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Abstract

Graphene-metal hybrid nanostructures have attracted considerable attention due to their potential applications in nanophotonics and optoelectronics. The output characteristics of devices based on such nanostructures largely depend on the properties of the metals. Here, we study the optical, electrical and structural properties of continuous thin gold and copper films grown by electron beam evaporation on monolayer graphene transferred onto silicon dioxide substrates. We find that the presence of graphene has a significant effect on optical losses and electrical resistance, both for thin gold and copper films. Furthermore, the growth kinetics of gold and copper films vary greatly; in particular, we found here a significant dependence of the properties of thin copper films on the deposition rate, unlike gold films. Our work provides new data on the optical properties of gold and copper, which should be considered in modeling and designing devices with graphene-metal nanolayers. View Full-Text
Keywords: graphene; thin metal films; graphene/metal hybrid nanostructures; optical constants; gold; copper; spectroscopic ellipsometry graphene; thin metal films; graphene/metal hybrid nanostructures; optical constants; gold; copper; spectroscopic ellipsometry
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Yakubovsky, D.I.; Stebunov, Y.V.; Kirtaev, R.V.; Voronin, K.V.; Voronov, A.A.; Arsenin, A.V.; Volkov, V.S. Graphene-Supported Thin Metal Films for Nanophotonics and Optoelectronics. Nanomaterials 2018, 8, 1058.

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