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

[11] Energy band-gap engineering of graphene nanoribbons [J].

Han, Melinda Y. ;

Oezyilmaz, Barbaros ;

Zhang, Yuanbo ;

Kim, Philip .

PHYSICAL REVIEW LETTERS, 2007, 98 (20)

[12] Structural properties of the multilayer graphene/4H-SiC(000(1) overbar) system as determined by surface x-ray diffraction [J].

Hass, J. ;

Feng, R. ;

Millan-Otoya, J. E. ;

Li, X. ;

Sprinkle, M. ;

First, P. N. ;

de Heer, W. A. ;

Conrad, E. H. ;

Berger, C. .

PHYSICAL REVIEW B, 2007, 75 (21)

[13] Carbon nanotubes as Schottky barrier transistors [J].

Heinze, S ;

Tersoff, J ;

Martel, R ;

Derycke, V ;

Appenzeller, J ;

Avouris, P .

PHYSICAL REVIEW LETTERS, 2002, 89 (10)

[14] HOPPING CONDUCTION IN AMORPHOUS SOLIDS [J].

HILL, RM .

PHILOSOPHICAL MAGAZINE, 1971, 24 (192) :1307-&

[15] PREPARATION OF GRAPHITIC OXIDE [J].

HUMMERS, WS ;

OFFEMAN, RE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1958, 80 (06) :1339-1339

[16]

KEDZIERSKI J, ARXIV08012744, P92102

[17]

KITTEL C, 1995, INTRO SOLID STATE PH

[18] Nanotube molecular wires as chemical sensors [J].

Kong, J ;

Franklin, NR ;

Zhou, CW ;

Chapline, MG ;

Peng, S ;

Cho, KJ ;

Dai, HJ .

SCIENCE, 2000, 287 (5453) :622-625

[19] Layer-by-layer assembly of ultrathin composite films from micron-sized graphite oxide sheets and polycations [J].

Kovtyukhova, NI ;

Ollivier, PJ ;

Martin, BR ;

Mallouk, TE ;

Chizhik, SA ;

Buzaneva, EV ;

Gorchinskiy, AD .

CHEMISTRY OF MATERIALS, 1999, 11 (03) :771-778

[20]

Lee S., 2005, PHYS REV LETT, V95

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