Work function of carbon nanotubes

被引：495

作者：

Shiraishi, M ^{[1
]}

Ata, M ^{[1
]}

机构：

[1] Sony Corp, Frontier Sci Labs, Hodogaya Ku, Yokohama, Kanagawa 2400036, Japan

来源：

CARBON | 2001年 / 39卷 / 12期

关键词：

carbon nanotubes; photoelectron spectroscopy; electrical properties;

D O I：

10.1016/S0008-6223(00)00322-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The work functions of multi- and single-walled carbon nanotubes are found to be 4.95 and 5.05 eV. respectively. The measurements were carried out using the photoelectron emission (PEE) method, which allows easy and precise measurements to be made in air. We have found that the work function of the nanotubes is 0.1-0.2 eV larger than that of highly oriented pyrolytic graphite (HOPG) of which the valence state is sigma-pi orthogonal. This result is ascribable to reflection of the sigma-pi mixed valence state in the case of carbon nanotubes. The experimental data were well reproduced in ab-initio calculations on planar and cylindrical conjugated states. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：1913 / 1917

页数：5

共 10 条

[1] Work functions and surface functional groups of multiwall carbon nanotubes [J].

Ago, H ;

Kugler, T ;

Cacialli, F ;

Salaneck, WR ;

Shaffer, MSP ;

Windle, AH ;

Friend, RH .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (38) :8116-8121

[2] Single-electron transport in ropes of carbon nanotubes [J].

Bockrath, M ;

Cobden, DH ;

McEuen, PL ;

Chopra, NG ;

Zettl, A ;

Thess, A ;

Smalley, RE .

SCIENCE, 1997, 275 (5308) :1922-1925

[3] Unique characteristics of cold cathode carbon-nanotube-matrix field emitters [J].

Collins, PG ;

Zettl, A .

PHYSICAL REVIEW B, 1997, 55 (15) :9391-9399

[4] C60-RELATED TUBULES [J].

DRESSELHAUS, MS ;

DRESSELHAUS, G ;

SAITO, R .

SOLID STATE COMMUNICATIONS, 1992, 84 (1-2) :201-205

[5]

KIM JM, 2000, 14 INT WINT EUR EL P, P54

[6]

OCHIAI Y, 1997, 16 FULL S, P129

[7] Work functions and valence band states of pristine and Cs-intercalated single-walled carbon nanotube bundles [J].

Suzuki, S ;

Bower, C ;

Watanabe, Y ;

Zhou, O .

APPLIED PHYSICS LETTERS, 2000, 76 (26) :4007-4009

[8]

UDA M, 1985, P 8 INT S EX EM APPL

[9] Carbon nanotube intramolecular junctions [J].

Yao, Z ;

Postma, HWC ;

Balents, L ;

Dekker, C .

NATURE, 1999, 402 (6759) :273-276

[10] Hydrogen adsorption and cohesive energy of single-walled carbon nanotubes [J].

Ye, Y ;

Ahn, CC ;

Witham, C ;

Fultz, B ;

Liu, J ;

Rinzler, AG ;

Colbert, D ;

Smith, KA ;

Smalley, RE .

APPLIED PHYSICS LETTERS, 1999, 74 (16) :2307-2309

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