Controlling mid-infrared plasmons in graphene nanostructures through post-fabrication chemical doping

Cita com:
hdl:2117/351528
Document typeArticle
Defense date2021-05-07
PublisherIOP
Rights accessOpen Access
Except where otherwise noted, content on this work
is licensed under a Creative Commons license
:
Attribution 3.0 Spain
Abstract
Engineering the doping level in graphene nanostructures to yield controlled and intense localized
surface plasmon resonance (LSPR) is fundamental for their practical use in applications such as
molecular sensing for point of care or environmental monitoring. In this work, we experimentally
study how chemical doping of graphene nanostructures using ethylene amines affects their
mid-infrared plasmonic response following the induced change in electrical transport properties.
Combining post-fabrication silanization and amine doping allows to prepare the surface to
support a strong LSPR response at zero bias. These findings pave the way to design highly doped
graphene LSPR surfaces for infrared sensors operating in real environments.
CitationPaulillo, B.; Bareza, N.J.; Pruneri, V. Controlling mid-infrared plasmons in graphene nanostructures through post-fabrication chemical doping. "Journal of Physics: Photonics", 7 Maig 2021, vol. 3, núm. 34001.
Publisher versionhttps://iopscience.iop.org/article/10.1088/2515-7647/abf943
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