Tunable carrier type and density in graphene/PbZr0.2Ti 0.8O3 hybrid structures through ferroelectric switching

Christoph Baeumer; Steven P. Rogers; Ruijuan Xu; Lane W. Martin; Moonsub Shim

doi:10.1021/nl4002052

Tunable carrier type and density in graphene/PbZr_0.2Ti _0.8O₃ hybrid structures through ferroelectric switching

Christoph Baeumer, Steven P. Rogers, Ruijuan Xu, Lane W. Martin, Moonsub Shim

Research output: Contribution to journal › Article › peer-review

Abstract

Bidirectional interdependency between graphene doping level and ferroelectric polarization is demonstrated in graphene/PbZr_0.2Ti _0.8O₃ hybrid structures. The polarization of the PbZr _0.2Ti_0.8O₃ can be effectively switched with graphene electrodes and can in turn alter carrier type and density in the graphene. A complete reversal of the current-voltage hysteresis direction is observed in the graphene when external environmental factors are minimized, converting p-type graphene into n-type with an estimated carrier density change as large as ∼10¹³ cm^-2. Nonvolatility and reversibility are also demonstrated.

Original language	English (US)
Pages (from-to)	1693-1698
Number of pages	6
Journal	Nano letters
Volume	13
Issue number	4
DOIs	https://doi.org/10.1021/nl4002052
State	Published - Apr 10 2013

Keywords

CVD graphene
ferroelectrics
interface
PbZrTiO
polarization reversal

ASJC Scopus subject areas

Condensed Matter Physics
Bioengineering
Chemistry(all)
Materials Science(all)
Mechanical Engineering

Online availability

10.1021/nl4002052

Library availability

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Cite this

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title = "Tunable carrier type and density in graphene/PbZr0.2Ti 0.8O3 hybrid structures through ferroelectric switching",

abstract = "Bidirectional interdependency between graphene doping level and ferroelectric polarization is demonstrated in graphene/PbZr0.2Ti 0.8O3 hybrid structures. The polarization of the PbZr 0.2Ti0.8O3 can be effectively switched with graphene electrodes and can in turn alter carrier type and density in the graphene. A complete reversal of the current-voltage hysteresis direction is observed in the graphene when external environmental factors are minimized, converting p-type graphene into n-type with an estimated carrier density change as large as ∼1013 cm-2. Nonvolatility and reversibility are also demonstrated.",

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AU - Baeumer, Christoph

AU - Rogers, Steven P.

AU - Xu, Ruijuan

AU - Martin, Lane W.

AU - Shim, Moonsub

PY - 2013/4/10

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AB - Bidirectional interdependency between graphene doping level and ferroelectric polarization is demonstrated in graphene/PbZr0.2Ti 0.8O3 hybrid structures. The polarization of the PbZr 0.2Ti0.8O3 can be effectively switched with graphene electrodes and can in turn alter carrier type and density in the graphene. A complete reversal of the current-voltage hysteresis direction is observed in the graphene when external environmental factors are minimized, converting p-type graphene into n-type with an estimated carrier density change as large as ∼1013 cm-2. Nonvolatility and reversibility are also demonstrated.

KW - CVD graphene

KW - ferroelectrics

KW - interface

KW - PbZrTiO

KW - polarization reversal

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