Electron hopping conduction in highly disordered carbon coils

被引：40

作者：

Chiu, Hui-Shan ^{[1
]}

Lin, Ping-I ^{[2
]}

Wu, Hsing-Chen ^{[1
]}

Hsieh, Wen-Hsing ^{[3
]}

Chen, Chii-Dong ^{[3
,4
]}

Chen, Yit-Tsong ^{[1
,2
]}

机构：

[1] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

[2] Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan

[3] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[4] Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan

来源：

CARBON | 2009年 / 47卷 / 07期

关键词：

RAMAN-SCATTERING; MICRO-COILS; NANOFIBERS; SILICON; PHOTOLUMINESCENCE; DECOMPOSITION; PYROLYSIS; SPECTRA; GROWTH; FILMS;

D O I：

10.1016/j.carbon.2009.03.002

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：

Carbon coils of micrometer to nanometer wire diameter were grown bi-directionally by catalyst-assisted chemical vapor deposition. Electron microscope images showed the highly disordered structure of the carbon coils. Chemical compositions of the coils were identified with elemental analysis, atmospheric pressure-laser desorption ionization-Fourier-trans form ion cyclotron resonance-mass spectroscopy and secondary ion mass spectrometric characterizations, and attenuated total reflection-infrared spectroscopic examination. Micro-Raman scattering spectroscopy and electron energy loss spectroscopy were also used to study the vibrational and electronic properties of the helical structure. The electric transport in a single carbon coil was measured from ambient temperature to 64 mK. The temperature-dependent resistance was analyzed with the Efros-Shklovskii variable range hopping model, indicating three-dimensional electron hopping conduction in the disordered helical wires. The analysis also provides a basic understanding of the electron transport with an electron hopping length of similar to 5 nm inside the disordered carbon coils. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1761 / 1769

页数：9

共 49 条

[1] SCALING THEORY OF LOCALIZATION - ABSENCE OF QUANTUM DIFFUSION IN 2 DIMENSIONS
ABRAHAMS, E
ANDERSON, PW
LICCIARDELLO, DC
RAMAKRISHNAN, TV
[J]. PHYSICAL REVIEW LETTERS, 1979, 42 (10) : 673 - 676
[2] UNIQUE FORM OF FILAMENTOUS CARBON
BAKER, RTK
HARRIS, PS
TERRY, S
[J]. NATURE, 1975, 253 (5486) : 37 - 39
[3] Castner T.G., 1991, HOPPING TRANSPORT SO, P1, DOI DOI 10.1016/B978-0-444-88037-6.50007-5
[4] MAGNETIC ANISOTROPIES OF ALIGNED CARBON NANOTUBES
CHAUVET, O
FORRO, L
BACSA, W
UGARTE, D
DOUDIN, B
DEHEER, WA
[J]. PHYSICAL REVIEW B, 1995, 52 (10) : R6963 - R6966
[5] Vapor phase preparation of super-elastic carbon micro-coils
Chen, X
Motojima, S
Iwanga, H
[J]. JOURNAL OF CRYSTAL GROWTH, 2002, 237 (1-4 III) : 1931 - 1936
[6] Morphology and microstructure of twisting nano-ribbons prepared using sputter-coated Fe-base alloy catalysts on glass substrates
Chen, XQ
Yang, SM
Motojima, S
Ichihara, M
[J]. MATERIALS LETTERS, 2005, 59 (07) : 854 - 858
[7] Carbon coatings on carbon micro-coils by pyrolysis of methane and their properties
Chen, XQ
Motojima, S
Iwanaga, H
[J]. CARBON, 1999, 37 (11) : 1825 - 1831
[8] AN UNUSUAL FORM OF CARBON
DAVIS, WR
SLAWSON, RJ
RIGBY, GR
[J]. NATURE, 1953, 171 (4356) : 756 - 756
[9] Carbon nanofibers: Catalytic synthesis and applications
De Jong, KP
Geus, JW
[J]. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 2000, 42 (04): : 481 - 510
[10] Aggregated diamond nanorods, the densest and least compressible form of carbon
Dubrovinskaia, N
Dubrovinsky, L
Crichton, W
Langenhorst, F
Richter, A
[J]. APPLIED PHYSICS LETTERS, 2005, 87 (08)

← 1 2 3 4 5 →