Carbon-Nanotube-Polymer Nanocomposites for Field-Emission Cathodes

被引：72

作者：

Connolly, Thomas ^{[1
]}

Smith, Richard C. ^{[1
]}

Hernandez, Yenny ^{[2
]}

Gun'ko, Yurii ^{[3
]}

Coleman, Jonathan N. ^{[2
]}

Carey, J. David ^{[1
]}

机构：

[1] Univ Surrey, Adv Technol Inst, Guildford GU2 7XH, Surrey, England

[2] Univ Dublin Trinity Coll, Sch Phys, Dublin 2, Ireland

[3] Univ Dublin Trinity Coll, Sch Chem, Dublin 2, Ireland

来源：

SMALL | 2009年 / 5卷 / 07期

基金：

英国工程与自然科学研究理事会; 爱尔兰科学基金会;

关键词：

carbon nanotubes; displays; electron field emission; nanocomposites; THIN-FILMS; COMPOSITES; CONDUCTIVITY; THRESHOLD;

D O I：

10.1002/smll.200801094

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The electron field-emission (FE) characteristics of functionalized single-walled carbon-nanotube (CNT)-polymer composites produced by solution processing are reported. It is shown that excellent electron emission can be obtained by using as little as 0.7% volume fraction of nanotubes in the composite. Furthermore by tailoring the nanotube concentration and type of polymer, improvements in the charge transfer through the composite can be obtained. The synthesis of well-dispersed randomly oriented nanotube-polymer composites by solution processing allows the development of CNT-based. large area cathodes produced using a scalable technology. The relative insensitivity of the cathode's FE characteristics to the electrical conductivity of the composite is also discussed.

引用

页码：826 / 831

页数：6

共 27 条

[1] Materials science - Nanotube composites [J].

Ajayan, Pulickel M. ;

Tour, James M. .

NATURE, 2007, 447 (7148) :1066-1068

[2] Polymer-nanotube composites: Burying nanotubes improves their field emission properties [J].

Alexandrou, I ;

Kymakis, E ;

Amaratunga, GAJ .

APPLIED PHYSICS LETTERS, 2002, 80 (08) :1435-1437

[3] High quality dispersions of functionalized single walled nanotubes at high concentration [J].

Amiran, Johnny ;

Nicolosi, Valeria ;

Bergin, Shane D. ;

Khan, Umar ;

Lyons, Philip E. ;

Coleman, Jonathan N. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (10) :3519-3524

[4] Field emission from single-wall carbon nanotube films [J].

Bonard, JM ;

Salvetat, JP ;

Stockli, T ;

de Heer, WA ;

Forro, L ;

Chatelain, A .

APPLIED PHYSICS LETTERS, 1998, 73 (07) :918-920

[5] Very low conductivity threshold in bulk isotropic single-walled carbon nanotube-epoxy composites [J].

Bryning, MB ;

Islam, MF ;

Kikkawa, JM ;

Yodh, AG .

ADVANCED MATERIALS, 2005, 17 (09) :1186-+

[6] Disorder, clustering, and localization effects in amorphous carbon [J].

Carey, JD ;

Silva, SRP .

PHYSICAL REVIEW B, 2004, 70 (23) :1-8

[7] Origin of electric field enhancement in field emission from amorphous carbon thin films [J].

Carey, JD ;

Forrest, RD ;

Silva, SRP .

APPLIED PHYSICS LETTERS, 2001, 78 (16) :2339-2341

[8] Conditioning of hydrogenated amorphous carbon thin films for field emission via current stressing [J].

Carey, JD ;

Silva, SRP .

APPLIED PHYSICS LETTERS, 2001, 78 (03) :347-349

[9] Transition from direct tunneling to field emission in carbon nanotube intramolecular junctions [J].

Chiu, Po-Wen ;

Roth, Siegmar .

APPLIED PHYSICS LETTERS, 2008, 92 (04)

[10] 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

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