Nitrogen doping effects on the structure behavior and the field emission performance of double-walled carbon nanotubes

被引：90

作者：

Chun, Kyoung-Yong ^{[1
]}

Lee, Heon Sang ^{[2
]}

Lee, Cheol Jin ^{[1
]}

机构：

[1] Korea Univ, Sch Elect Engn, Seoul 136701, South Korea

[2] LG Chem Ltd, Ctr Technol, Taejon 305343, South Korea

来源：

CARBON | 2009年 / 47卷 / 01期

关键词：

CHEMICAL-VAPOR-DEPOSITION; ELECTRON-EMISSION; HYDROGEN STORAGE; TEMPERATURE; BORON; GROWTH; FILMS; ATOMS;

D O I：

10.1016/j.carbon.2008.09.047

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 nitrogen (N) doping effect and field emission properties of double-walled carbon nanotubes (DWCNTs) were investigated. Diameter transformation and defect generation in the N-doped DWCNTs mainly depend on the amount of nitrogen employed. By applying N-doping into DWCNTs (1.5 N at.%), the average diameters of the DWCNTs were increased from 1.7 to 2.4 nm, and the crystallinity (I-G/I-D) was decreased from 13.5 to 5. Field emission properties were enhanced by the N doping into DWCNTs. The turn-on field, corresponding to a current density of 0.1 mu A/cm(2), was about 0.9V/mu m for the N-doped DWCNTs (1.5 N at.%). The field enhancement factor of the N-doped DWCNTs was higher than that of the undoped DWCNTs. It was found that the field emission properties were controlled by pyridine-like N in the graphite due to N-doping. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：169 / 177

页数：9

共 57 条

[21] N-doped double-walled carbon nanotubes synthesized by chemical vapor deposition [J].

Kim, SY ;

Lee, J ;

Na, CW ;

Park, J ;

Seo, K ;

Kim, B .

CHEMICAL PHYSICS LETTERS, 2005, 413 (4-6) :300-305

[22] Carbon nanotube growth enhanced by nitrogen incorporation [J].

Kim, TY ;

Lee, KR ;

Eun, KY ;

Oh, KH .

CHEMICAL PHYSICS LETTERS, 2003, 372 (3-4) :603-607

[23] Alkaline metal-doped n-type semiconducting nanotubes as quantum dots [J].

Kong, J ;

Zhou, CW ;

Yenilmez, E ;

Dai, HJ .

APPLIED PHYSICS LETTERS, 2000, 77 (24) :3977-3979

[24]

Kong J, 2001, ADV MATER, V13, P1384, DOI 10.1002/1521-4095(200109)13:18<1384::AID-ADMA1384>3.0.CO

[25]

2-8

[26] Influence of Ni-Co catalyst composition on nitrogen content in carbon nanotubes [J].

Kudashov, AG ;

Okotrub, AV ;

Bulusheva, LG ;

Asanov, LP ;

Shubin, YV ;

Yudanov, NF ;

Yudanova, LI ;

Danilovich, VS ;

Abrosimov, OG .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (26) :9048-9053

[27] Hydrogen storage capacity characterization of carbon nanotubes by a microgravimetrical approach [J].

Lan, AD ;

Mukasyan, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (33) :16011-16016

[28] Conductivity enhancement in single-walled carbon nanotube bundles doped with K and Br [J].

Lee, RS ;

Kim, HJ ;

Fischer, JE ;

Thess, A ;

Smalley, RE .

NATURE, 1997, 388 (6639) :255-257

[29] Growth of vertically aligned nitrogen-doped carbon nanotubes:: Control of the nitrogen content over the temperature range 900-1100 °C [J].

Lee, YT ;

Kim, NS ;

Bae, SY ;

Park, J ;

Yu, SC ;

Ryu, H ;

Lee, HJ .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (47) :12958-12963

[30] Clean double-walled carbon nanotubes synthesized by CVD [J].

Li, WZ ;

Wen, JG ;

Sennett, M ;

Ren, ZF .

CHEMICAL PHYSICS LETTERS, 2003, 368 (3-4) :299-306

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