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

^*Corresponding author for this work

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

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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
Pages (from-to)	1693-1698
Number of pages	6
Journal	Nano letters
Volume	13
Issue number	4
DOIs	https://doi.org/10.1021/nl4002052
Publication status	Published - 10 Apr 2013
Externally published	Yes

Keywords

CVD graphene
ferroelectrics
interface
PbZrTiO
polarization reversal

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10.1021/nl4002052

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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.",

keywords = "CVD graphene, ferroelectrics, interface, PbZrTiO, polarization reversal",

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T1 - Tunable carrier type and density in graphene/PbZr0.2Ti 0.8O3 hybrid structures through ferroelectric switching

AU - Baeumer, Christoph

AU - Rogers, Steven P.

AU - Xu, Ruijuan

AU - Martin, Lane W.

AU - Shim, Moonsub

PY - 2013/4/10

Y1 - 2013/4/10

N2 - 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.

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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VL - 13

SP - 1693

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JO - Nano letters

JF - Nano letters

SN - 1530-6984

IS - 4

ER -

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

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Keywords

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