Field emission characteristics of point emitters fabricated by a multiwalled carbon nanotube yarn

被引：36

作者：

Chen, Guohai ^{[1
]}

Shin, Dong Hoon ^{[1
]}

Roth, Siegmar ^{[1
,2
]}

Lee, Cheol Jin ^{[1
]}

机构：

[1] Korea Univ, Sch Elect Engn, Seoul 136713, South Korea

[2] SINEUROP Nanotech GmbH, D-70182 Stuttgart, Germany

来源：

NANOTECHNOLOGY | 2009年 / 20卷 / 31期

关键词：

FILMS;

D O I：

10.1088/0957-4484/20/31/315201

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We fabricated point emitters using a multiwalled carbon nanotube (MWCNT) yarn which was treated by ethylene glycol. The point emitter showed a very high emission current of 3.01 mA (current density of 1.1 x 10(8) A cm(-2)) and good emission stability of over 20 h. We attributed the excellent field emission properties to a large field enhancement factor caused by the large aspect ratio of the sharp tip of the point emitter and the tight bonding of neighboring MWCNTs due to the ethylene glycol treatment. We investigated the field enhancement factor according to the gap between the anode and the emitter tip at a macroscopic gap regime. The measured field enhancement factor of the MWCNT point emitter was in good agreement with theoretical models.

引用

页数：5

共 27 条

[1] Carbon nanotube films as electron field emitters [J].

Bonard, JM ;

Croci, M ;

Klinke, C ;

Kurt, R ;

Noury, O ;

Weiss, N .

CARBON, 2002, 40 (10) :1715-1728

[2] Field emission of individual carbon nanotubes in the scanning electron microscope [J].

Bonard, JM ;

Dean, KA ;

Coll, BF ;

Klinke, C .

PHYSICAL REVIEW LETTERS, 2002, 89 (19) :1-197602

[3] Enhanced field emission properties of vertically aligned double-walled carbon nanotube arrays [J].

Chen, Guohai ;

Shin, Dong Hoon ;

Iwasaki, Takayuki ;

Kawarada, Hiroshi ;

Lee, Cheol Jin .

NANOTECHNOLOGY, 2008, 19 (41)

[4] Fully sealed, high-brightness carbon-nanotube field-emission display [J].

Choi, WB ;

Chung, DS ;

Kang, JH ;

Kim, HY ;

Jin, YW ;

Han, IT ;

Lee, YH ;

Jung, JE ;

Lee, NS ;

Park, GS ;

Kim, JM .

APPLIED PHYSICS LETTERS, 1999, 75 (20) :3129-3131

[5] Characterization of the field emission properties of individual thin carbon nanotubes [J].

de Jonge, N ;

Allioux, M ;

Doytcheva, M ;

Kaiser, M ;

Teo, KBK ;

Lacerda, RG ;

Milne, WI .

APPLIED PHYSICS LETTERS, 2004, 85 (09) :1607-1609

[6] Experimental and computational study of field emission characteristics from amorphous carbon single nanotips grown by carbon contamination -: I.: Experiments and computation [J].

Edgcombe, CJ ;

Valdré, U .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 2002, 82 (09) :987-1007

[7] Enhancement of field emission characteristics of tungsten emitters by single-walled carbon nanotube modification [J].

Ferrer, D ;

Tanii, T ;

Matsuya, I ;

Zhong, G ;

Okamoto, S ;

Kawarada, H ;

Shinada, T ;

Ohdomari, I .

APPLIED PHYSICS LETTERS, 2006, 88 (03) :1-3

[8] Field emission in vacuum micro-electronics [J].

Fursey, GN .

APPLIED SURFACE SCIENCE, 2003, 215 (1-4) :113-134

[9] Giant field enhancement at carbon nanotube tips induced by multistage effect [J].

Huang, JY ;

Kempa, K ;

Jo, SH ;

Chen, S ;

Ren, ZF .

APPLIED PHYSICS LETTERS, 2005, 87 (05)

[10] Effect of length and spacing of vertically aligned carbon nanotubes on field emission properties [J].

Jo, SH ;

Tu, Y ;

Huang, ZP ;

Carnahan, DL ;

Wang, DZ ;

Ren, ZF .

APPLIED PHYSICS LETTERS, 2003, 82 (20) :3520-3522

← 1 2 3 →