A Graphene-Edge Ferroelectric Molecular Switch

José M. Caridad, Gaetano Calogero, Paolo Pedrinazzi, Jaime Eduardo Vieira da Silva Moutinho Santos, Anthony Impellizzeri, Tue Gunst, Timothy J. Booth, Roman Sordan, Peter Bøggild, Mads Brandbyge*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

We show that polar molecules (water, ammonia, and nitrogen dioxide) adsorbed solely at the exposed edges of an encapsulated graphene sheet exhibit ferroelectricity, collectively orienting and switching reproducibly between two available states in response to an external electric field. This ferroelectric molecular switching introduces drastic modifications to the graphene bulk conductivity and produces a large and ambipolar charge bistability in micrometer-size graphene devices. This system comprises an experimental realization of envisioned memory capacitive (“memcapacitive”) devices whose capacitance is a function of their charging history, here conceived via confined and correlated polar molecules at the one-dimensional edge of a two-dimensional crystal.
Original languageEnglish
JournalNano letters
Volume18
Issue number8
Pages (from-to)4675-4683
Number of pages9
ISSN1530-6984
DOIs
Publication statusPublished - 2018

Keywords

  • Graphene edges
  • Polar molecules
  • Ferroelectricity
  • Mqemcapacitor
  • Hysteresis
  • Molecular switch

Cite this

Caridad, J. M., Calogero, G., Pedrinazzi, P., Santos, J. E. V. D. S. M., Impellizzeri, A., Gunst, T., ... Brandbyge, M. (2018). A Graphene-Edge Ferroelectric Molecular Switch. Nano letters, 18(8), 4675-4683. https://doi.org/10.1021/acs.nanolett.8b00797
Caridad, José M. ; Calogero, Gaetano ; Pedrinazzi, Paolo ; Santos, Jaime Eduardo Vieira da Silva Moutinho ; Impellizzeri, Anthony ; Gunst, Tue ; Booth, Timothy J. ; Sordan, Roman ; Bøggild, Peter ; Brandbyge, Mads. / A Graphene-Edge Ferroelectric Molecular Switch. In: Nano letters. 2018 ; Vol. 18, No. 8. pp. 4675-4683.
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abstract = "We show that polar molecules (water, ammonia, and nitrogen dioxide) adsorbed solely at the exposed edges of an encapsulated graphene sheet exhibit ferroelectricity, collectively orienting and switching reproducibly between two available states in response to an external electric field. This ferroelectric molecular switching introduces drastic modifications to the graphene bulk conductivity and produces a large and ambipolar charge bistability in micrometer-size graphene devices. This system comprises an experimental realization of envisioned memory capacitive (“memcapacitive”) devices whose capacitance is a function of their charging history, here conceived via confined and correlated polar molecules at the one-dimensional edge of a two-dimensional crystal.",
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Caridad, JM, Calogero, G, Pedrinazzi, P, Santos, JEVDSM, Impellizzeri, A, Gunst, T, Booth, TJ, Sordan, R, Bøggild, P & Brandbyge, M 2018, 'A Graphene-Edge Ferroelectric Molecular Switch', Nano letters, vol. 18, no. 8, pp. 4675-4683. https://doi.org/10.1021/acs.nanolett.8b00797

A Graphene-Edge Ferroelectric Molecular Switch. / Caridad, José M.; Calogero, Gaetano; Pedrinazzi, Paolo; Santos, Jaime Eduardo Vieira da Silva Moutinho; Impellizzeri, Anthony; Gunst, Tue; Booth, Timothy J.; Sordan, Roman; Bøggild, Peter; Brandbyge, Mads.

In: Nano letters, Vol. 18, No. 8, 2018, p. 4675-4683.

Research output: Contribution to journalJournal articleResearchpeer-review

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T1 - A Graphene-Edge Ferroelectric Molecular Switch

AU - Caridad, José M.

AU - Calogero, Gaetano

AU - Pedrinazzi, Paolo

AU - Santos, Jaime Eduardo Vieira da Silva Moutinho

AU - Impellizzeri, Anthony

AU - Gunst, Tue

AU - Booth, Timothy J.

AU - Sordan, Roman

AU - Bøggild, Peter

AU - Brandbyge, Mads

PY - 2018

Y1 - 2018

N2 - We show that polar molecules (water, ammonia, and nitrogen dioxide) adsorbed solely at the exposed edges of an encapsulated graphene sheet exhibit ferroelectricity, collectively orienting and switching reproducibly between two available states in response to an external electric field. This ferroelectric molecular switching introduces drastic modifications to the graphene bulk conductivity and produces a large and ambipolar charge bistability in micrometer-size graphene devices. This system comprises an experimental realization of envisioned memory capacitive (“memcapacitive”) devices whose capacitance is a function of their charging history, here conceived via confined and correlated polar molecules at the one-dimensional edge of a two-dimensional crystal.

AB - We show that polar molecules (water, ammonia, and nitrogen dioxide) adsorbed solely at the exposed edges of an encapsulated graphene sheet exhibit ferroelectricity, collectively orienting and switching reproducibly between two available states in response to an external electric field. This ferroelectric molecular switching introduces drastic modifications to the graphene bulk conductivity and produces a large and ambipolar charge bistability in micrometer-size graphene devices. This system comprises an experimental realization of envisioned memory capacitive (“memcapacitive”) devices whose capacitance is a function of their charging history, here conceived via confined and correlated polar molecules at the one-dimensional edge of a two-dimensional crystal.

KW - Graphene edges

KW - Polar molecules

KW - Ferroelectricity

KW - Mqemcapacitor

KW - Hysteresis

KW - Molecular switch

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DO - 10.1021/acs.nanolett.8b00797

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SP - 4675

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JO - Nano Letters

JF - Nano Letters

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Caridad JM, Calogero G, Pedrinazzi P, Santos JEVDSM, Impellizzeri A, Gunst T et al. A Graphene-Edge Ferroelectric Molecular Switch. Nano letters. 2018;18(8):4675-4683. https://doi.org/10.1021/acs.nanolett.8b00797