Facile Fabrication and Field Emission of Metal-Particle-Decorated Vertical N-Doped Carbon Nanotube/Graphene Hybrid Films

被引：64

作者：

Lee, Duck Hyun ^{[1
]}

Lee, Jin Ah ^{[1
]}

Lee, Won Joon ^{[1
]}

Choi, Dong Sung ^{[1
]}

Lee, Won Jong ^{[1
]}

Kim, Sang Ouk ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, 373-1 Guseong Dong, Taejon 305701, South Korea

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 49期

关键词：

NANOTUBE ARRAYS; ELECTRON-EMISSION; GROWTH;

D O I：

10.1021/jp1077714

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：

In this study, vertical N-doped carbon nanotube (VNCNT) arrays were decorated with Au, Ru, or Mn nanoparticles, and the effects of the particles on the field-emission properties were investigated. Uniform catalyst nanoparticles were prepared by block copolymer lithography on a graphene film, and the VNCNT arrays were grown from the nanopatterned catalyst particles by plasma-enhanced chemical vapor deposition (PECVD). The surfaces of the VNCNT arrays were subsequently decorated with metal particles, and the vertical alignment of the NCNT arrays was maintained by high-vacuum annealing. The field-emission properties of the metal-particle-decorated VNCNT arrays varied according to the changes in the work-function values, with the Mn-VNCNT field emitter showing the best performance among the emitters tested. Our results revealed that the field-emission properties of VNCNT arrays may be tuned by decoration with metal particles and that particle decoration with a low-work-function material may be used to develop efficient field emitters.

引用

页码：21184 / 21189

页数：6

共 38 条

[31] LaB6 tip-modified multiwalled carbon nanotube as high quality field emission electron source [J].

Wei, Wei ;

Jiang, Kaili ;

Wei, Yang ;

Liu, Peng ;

Liu, Kai ;

Zhang, Lina ;

Li, Qunqing ;

Fan, Shoushan .

APPLIED PHYSICS LETTERS, 2006, 89 (20)

[32] Novel cold cathode materials and applications [J].

Xu, NS ;

Huq, SE .

MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2005, 48 (2-5) :47-189

[33] Effect of nanowire catalyst for carbon nanotubes growth by ICP-CVD [J].

Yen, JH ;

Leu, IC ;

Wu, MT ;

Lin, CC ;

Hon, MH .

[34]

Zamudio A, 2006, SMALL, V2, P346, DOI [10.1002/smll.200500348, 10.1002/50111.200500348]

[35] Improvement of the field emission of carbon nanotubes by hafnium coating and annealing [J].

Zhang, JH ;

Yang, CR ;

Wang, YJ ;

Feng, T ;

Yu, WD ;

Jiang, J ;

Wang, X ;

Liu, XH .

NANOTECHNOLOGY, 2006, 17 (01) :257-260

[36]

ZHENG JP, 1995, J ELECTROCHEM SOC, V142, pL6, DOI 10.1149/1.2043984

[37] Field emission in doped nanotubes [J].

Zhou, G ;

Duan, WH .

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2005, 5 (09) :1421-1434

[38] Effects of CF4 plasma on the field emission properties of aligned multi-wall carbon nanotube films [J].

Zhu, YW ;

Cheong, FC ;

Yu, T ;

Xu, XJ ;

Lim, CT ;

Thong, JTL ;

Shen, ZX ;

Ong, CK ;

Liu, YJ ;

Wee, ATS ;

Sow, CH .

CARBON, 2005, 43 (02) :395-400

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