Fabrication and Properties of Ag-nanoparticles Embedded Amorphous Carbon Nanowire/CNT Heterostructures

被引：20

作者：

Chen, Ke-fan ^{[1
]}

Deng, Jian-hua ^{[1
]}

Zhao, Fei ^{[1
]}

Cheng, Guo-an ^{[1
]}

Zheng, Rui-ting ^{[1
]}

机构：

[1] Beijing Normal Univ, Coll Nucl Sci & Technol, Minist Educ, Key Lab Beam Technol & Mat Modificat, Beijing 100875, Peoples R China

来源：

NANOSCALE RESEARCH LETTERS | 2010年 / 5卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Carbon nanotube; Nanowire; Ion implantation; Field emission; FIELD-EMISSION PROPERTIES; CHEMICAL-VAPOR-DEPOSITION; ION IRRADIATION; NANOTUBES; BORON; ELECTRON; ARRAYS; FILMS;

D O I：

10.1007/s11671-010-9660-8

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Carbon nanotubes were subjected to doping with an energetic Ag ion beam, and the carbon nanotubes on the top of the array were transformed into amorphous carbon nanowires with embedded Ag-nanoparticles. The field emission characteristics of these nanowires were investigated. The minimum turn-on and threshold fields were 0.68 and 1.09 V/mu m, respectively, which were lower than those of the as-grown carbon nanotubes. This was probably because Ag-nanoparticles embedded in the carbon nanowires reduced the effective work function from 4.59 to 4.23 eV. Large doping amounts produced serious structural damage at the top of the nanowires and impaired the field emission characteristics.

引用

页码：1449 / 1455

页数：7

共 31 条

[11] Nano electromechanical sensors based on carbon nanotubes [J].

Hierold, Christofer ;

Jungen, Alain ;

Stampfer, Christoph ;

Helbling, Thomas .

SENSORS AND ACTUATORS A-PHYSICAL, 2007, 136 (01) :51-61

[12] XPS CORE LINE ASYMMETRIES IN METALS [J].

HUFNER, S ;

WERTHEIM, GK ;

WERNICK, JH .

SOLID STATE COMMUNICATIONS, 1975, 17 (04) :417-422

[13] HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].

IIJIMA, S .

NATURE, 1991, 354 (6348) :56-58

[14] Electrostatically telescoping nanotube nonvolatile memory device [J].

Kang, Jeong Won ;

Jiang, Qing .

NANOTECHNOLOGY, 2007, 18 (09)

[15] Work-function engineering of carbon nanotube transparent conductive films [J].

Kang, Seong Jun ;

Song, Yoojin ;

Yi, Yeonjin ;

Choi, Won Mook ;

Yoon, Seon-Mi ;

Choi, Jae-Young .

CARBON, 2010, 48 (02) :520-524

[16] Engineering of nanostructured carbon materials with electron or ion beams [J].

Krasheninnikov, A. V. ;

Banhart, F. .

NATURE MATERIALS, 2007, 6 (10) :723-733

[17] Effect of intense laser and energetic ion irradiation on Raman modes of Multiwalled Carbon Nanotubes [J].

Kumar, Amit ;

Singh, F. ;

Koinkar, P. M. ;

Avasthi, D. K. ;

Pivin, J. C. ;

More, M. A. .

THIN SOLID FILMS, 2009, 517 (15) :4322-4324

[18] Layered growth of aligned carbon nanotubes arrays on silicon wafers [J].

Liu, HP ;

Cheng, GA ;

Zheng, RT ;

Zhao, Y ;

Liang, CL .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2006, 247 (1-2) :52-57

[19] Effects of the restructuring of Fe catalyst films on chemical vapor deposition of carbon nanotubes [J].

Liu, Huaping ;

Cheng, Guo-An ;

Zheng, Ruiting ;

Zhao, Yong ;

Liang, Changlin .

SURFACE & COATINGS TECHNOLOGY, 2008, 202 (14) :3157-3163

[20] Fabrication of silicon carbide nanowires/carbon nanotubes heterojunction arrays by high-flux Si ion implantation [J].

Liu, Huaping ;

Cheng, Guo-An ;

Liang, Changlin ;

Zheng, Ruiting .

NANOTECHNOLOGY, 2008, 19 (24)

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