Epitaxial-graphene/graphene-oxide junction: An essential step towards epitaxial graphene electronics

被引：286

作者：

Wu, Xiaosong ^{[1
]}

Sprinkle, Mike ^{[1
]}

Li, Xuebin ^{[1
]}

Ming, Fan ^{[1
]}

Berger, Claire ^{[1
,2
]}

de Heer, Walt A. ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA

[2] Inst Neel, CNRS, F-38042 Grenoble, France

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.101.026801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Graphene-oxide (GO) flakes have been deposited to bridge the gap between two epitaxial-graphene electrodes to produce all-graphene devices. Electrical measurements indicate the presence of Schottky barriers at the graphene/graphene-oxide junctions, as a consequence of the band gap in GO. The barrier height is found to be about 0.7 eV, and is reduced after annealing at 180 degrees C, implying that the gap can be tuned by changing the degree of oxidation. A lower limit of the GO mobility was found to be 850 cm(2)/V s, rivaling silicon. In situ local oxidation of patterned epitaxial graphene has been achieved.

引用

页数：4

共 30 条

[1] Effects of electron confinement on thermionic emission current in a modulation doped heterostructure [J].

Anwar, A ;

Nabet, B ;

Culp, J ;

Castro, F .

JOURNAL OF APPLIED PHYSICS, 1999, 85 (05) :2663-2666

[2] Ultrathin epitaxial graphite: 2D electron gas properties and a route toward graphene-based nanoelectronics [J].

Berger, C ;

Song, ZM ;

Li, TB ;

Li, XB ;

Ogbazghi, AY ;

Feng, R ;

Dai, ZT ;

Marchenkov, AN ;

Conrad, EH ;

First, PN ;

de Heer, WA .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (52) :19912-19916

[3] Electronic confinement and coherence in patterned epitaxial graphene [J].

Berger, Claire ;

Song, Zhimin ;

Li, Xuebin ;

Wu, Xiaosong ;

Brown, Nate ;

Naud, Cecile ;

Mayou, Didier ;

Li, Tianbo ;

Hass, Joanna ;

Marchenkov, Atexei N. ;

Conrad, Edward H. ;

First, Phillip N. ;

de Heer, Wait A. .

SCIENCE, 2006, 312 (5777) :1191-1196

[4]

Brodie B.C., 1859, Philosophical Transactions of the Royal Society of London, V149, P249, DOI [DOI 10.1098/RSTL.1859.0013, 10.1098/rstl.1859.0013]

[5] Epitaxial graphene [J].

de Heer, Walt A. ;

Berger, Claire ;

Wu, Xiaosong ;

First, Phillip N. ;

Conrad, Edward H. ;

Li, Xuebin ;

Li, Tianbo ;

Sprinkle, Michael ;

Hass, Joanna ;

Sadowski, Marcin L. ;

Potemski, Marek ;

Martinez, Gerard .

SOLID STATE COMMUNICATIONS, 2007, 143 (1-2) :92-100

[6] Graphene bilayer with a twist: Electronic structure [J].

dos Santos, J. M. B. Lopes ;

Peres, N. M. R. ;

Castro Neto, A. H. .

PHYSICAL REVIEW LETTERS, 2007, 99 (25)

[7]

*EPAPS, EPRLTAO101069828 EPA, P34319

[8] ELECTRON-SPECTROSCOPY OF GRAPHITE, GRAPHITE OXIDE AND AMORPHOUS-CARBON [J].

GALUSKA, AA ;

MADDEN, HH ;

ALLRED, RE .

APPLIED SURFACE SCIENCE, 1988, 32 (03) :253-272

[9] A chemical route to graphene for device applications [J].

Gilje, Scott ;

Han, Song ;

Wang, Minsheng ;

Wang, Kang L. ;

Kaner, Richard B. .

NANO LETTERS, 2007, 7 (11) :3394-3398

[10] Electronic transport properties of individual chemically reduced graphene oxide sheets [J].

Gomez-Navarro, Cristina ;

Weitz, R. Thomas ;

Bittner, Alexander M. ;

Scolari, Matteo ;

Mews, Alf ;

Burghard, Marko ;

Kern, Klaus .

NANO LETTERS, 2007, 7 (11) :3499-3503

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