Modification of electrical properties of graphene by substrate-induced nanomodulation

Jong Kwon Lee; Shiro Yamazaki; Hoyeol Yun; Jinwoo Park; Gary P. Kennedy; Gyu Tae Kim; Oswald Pietzsch; Roland Wiesendanger; Sangwook Lee; Suklyun Hong; Urszula Dettlaff-Weglikowska; Siegmar Roth

doi:10.1021/nl400827p

Modification of electrical properties of graphene by substrate-induced nanomodulation

Jong Kwon Lee, Shiro Yamazaki, Hoyeol Yun, Jinwoo Park, Gary P. Kennedy, Gyu Tae Kim, Oswald Pietzsch, Roland Wiesendanger, Sangwook Lee, Suklyun Hong, Urszula Dettlaff-Weglikowska, Siegmar Roth

Department of Physics

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

97 Scopus citations

Abstract

A periodically modulated graphene (PMG) generated by nanopatterned surfaces is reported to profoundly modify the intrinsic electronic properties of graphene. The temperature dependence of the sheet resistivity and gate response measurements clearly show a semiconductor-like behavior. Raman spectroscopy reveals significant shifts of the G and the 2D modes induced by the interaction with the underlying grid-like nanostructure. The influence of the periodic, alternating contact with the substrate surface was studied in terms of strain caused by bending of graphene and doping through chemical interactions with underlying substrate atoms. Electronic structure calculations performed on a model of PMG reveals that it is possible to tune a band gap within 0.14-0.19 eV by considering both the periodic mechanical bending and the surface coordination chemistry. Therefore, the PMG can be regarded as a further step toward band gap engineering of graphene devices.

Original language	English
Pages (from-to)	3494-3500
Number of pages	7
Journal	Nano Letters
Volume	13
Issue number	8
DOIs	https://doi.org/10.1021/nl400827p
State	Published - 14 Aug 2013

Keywords

Graphene
bandgap
periodic nanomodulation
superstructure

Access to Document

10.1021/nl400827p

Cite this

@article{a0c70c3ff73548919754101b480e1dd0,

title = "Modification of electrical properties of graphene by substrate-induced nanomodulation",

abstract = "A periodically modulated graphene (PMG) generated by nanopatterned surfaces is reported to profoundly modify the intrinsic electronic properties of graphene. The temperature dependence of the sheet resistivity and gate response measurements clearly show a semiconductor-like behavior. Raman spectroscopy reveals significant shifts of the G and the 2D modes induced by the interaction with the underlying grid-like nanostructure. The influence of the periodic, alternating contact with the substrate surface was studied in terms of strain caused by bending of graphene and doping through chemical interactions with underlying substrate atoms. Electronic structure calculations performed on a model of PMG reveals that it is possible to tune a band gap within 0.14-0.19 eV by considering both the periodic mechanical bending and the surface coordination chemistry. Therefore, the PMG can be regarded as a further step toward band gap engineering of graphene devices.",

keywords = "Graphene, bandgap, periodic nanomodulation, superstructure",

author = "Lee, {Jong Kwon} and Shiro Yamazaki and Hoyeol Yun and Jinwoo Park and Kennedy, {Gary P.} and Kim, {Gyu Tae} and Oswald Pietzsch and Roland Wiesendanger and Sangwook Lee and Suklyun Hong and Urszula Dettlaff-Weglikowska and Siegmar Roth",

year = "2013",

month = aug,

day = "14",

doi = "10.1021/nl400827p",

language = "English",

volume = "13",

pages = "3494--3500",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "8",

}

TY - JOUR

T1 - Modification of electrical properties of graphene by substrate-induced nanomodulation

AU - Lee, Jong Kwon

AU - Yamazaki, Shiro

AU - Yun, Hoyeol

AU - Park, Jinwoo

AU - Kennedy, Gary P.

AU - Kim, Gyu Tae

AU - Pietzsch, Oswald

AU - Wiesendanger, Roland

AU - Lee, Sangwook

AU - Hong, Suklyun

AU - Dettlaff-Weglikowska, Urszula

AU - Roth, Siegmar

PY - 2013/8/14

Y1 - 2013/8/14

N2 - A periodically modulated graphene (PMG) generated by nanopatterned surfaces is reported to profoundly modify the intrinsic electronic properties of graphene. The temperature dependence of the sheet resistivity and gate response measurements clearly show a semiconductor-like behavior. Raman spectroscopy reveals significant shifts of the G and the 2D modes induced by the interaction with the underlying grid-like nanostructure. The influence of the periodic, alternating contact with the substrate surface was studied in terms of strain caused by bending of graphene and doping through chemical interactions with underlying substrate atoms. Electronic structure calculations performed on a model of PMG reveals that it is possible to tune a band gap within 0.14-0.19 eV by considering both the periodic mechanical bending and the surface coordination chemistry. Therefore, the PMG can be regarded as a further step toward band gap engineering of graphene devices.

AB - A periodically modulated graphene (PMG) generated by nanopatterned surfaces is reported to profoundly modify the intrinsic electronic properties of graphene. The temperature dependence of the sheet resistivity and gate response measurements clearly show a semiconductor-like behavior. Raman spectroscopy reveals significant shifts of the G and the 2D modes induced by the interaction with the underlying grid-like nanostructure. The influence of the periodic, alternating contact with the substrate surface was studied in terms of strain caused by bending of graphene and doping through chemical interactions with underlying substrate atoms. Electronic structure calculations performed on a model of PMG reveals that it is possible to tune a band gap within 0.14-0.19 eV by considering both the periodic mechanical bending and the surface coordination chemistry. Therefore, the PMG can be regarded as a further step toward band gap engineering of graphene devices.

KW - Graphene

KW - bandgap

KW - periodic nanomodulation

KW - superstructure

UR - http://www.scopus.com/inward/record.url?scp=84881598631&partnerID=8YFLogxK

U2 - 10.1021/nl400827p

DO - 10.1021/nl400827p

M3 - Article

C2 - 23848516

AN - SCOPUS:84881598631

SN - 1530-6984

VL - 13

SP - 3494

EP - 3500

JO - Nano Letters

JF - Nano Letters

IS - 8

ER -

Modification of electrical properties of graphene by substrate-induced nanomodulation

Abstract

Keywords

Access to Document

Fingerprint

Cite this