Field emission properties of carbon nanotubes grown on Co/TiN coated Ta substrate for cathode in microwave power amplifier

被引：33

作者：

Han, JH

Lee, TY

Kim, DY

Yoo, JB

Park, CY

Choi, JJ

Jung, T

Han, IT

Kim, JM

机构：

[1] Sungkyunkwan Univ, Ctr Nanotubes & Nanostruct Composites, Suwon 440746, South Korea

[2] Gwangwoon Univ, Sch Elect Engn, Seoul 139701, South Korea

[3] Samsung Adv Inst Technol, Mat & Devices Lab, Suwon 440600, South Korea

来源：

关键词：

carbon nanotube; high emission current; Ta; TiN;

D O I：

10.1016/j.diamond.2003.11.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

For field emitters as a cathode of traveling wave tube-microwave power amplifiers (TWT-MPA), field-emission (FE) properties of in situ grown carbon nanotubes (CNTs) onto electrically conducting substrate were systematically characterized. CNTs grown on the Co/TiN coated Ta substrate with properly controlled process exhibited the best FE property. The maximum current density and corresponding total emission current were 3.5 mA/cm(2) and similar to 1.7 mA at 21.6 V/mum, respectively. Details on the correlation between the FE properties and the morphological parameters will be discussed. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：987 / 993

页数：7

共 25 条

[1] Field emission from isolated individual vertically aligned carbon nanocones [J].

Baylor, LR ;

Merkulov, VI ;

Ellis, ED ;

Guillorn, MA ;

Lowndes, DH ;

Melechko, AV ;

Simpson, ML ;

Whealton, JH .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (07) :4602-4606

[2] Field emission properties of multiwalled carbon nanotubes [J].

Bonard, JM ;

Maier, F ;

Stöckli, T ;

Châtelain, A ;

de Heer, WA ;

Salvetat, JP ;

Forró, L .

ULTRAMICROSCOPY, 1998, 73 (1-4) :7-15

[3] 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

[4]

Bonard JM, 2001, ADV MATER, V13, P184, DOI 10.1002/1521-4095(200102)13:3<184::AID-ADMA184>3.0.CO

[5]

2-I

[6] Two field-emission states of single-walled carbon nanotubes [J].

Collazo, R ;

Schlesser, R ;

Sitar, Z .

APPLIED PHYSICS LETTERS, 2001, 78 (14) :2058-2060

[7]

COLLINS PG, 1969, APPL PHYS LETT, V69, P1996

[8] Current saturation mechanisms in carbon nanotube field emitters [J].

Dean, KA ;

Chalamala, BR .

APPLIED PHYSICS LETTERS, 2000, 76 (03) :375-377

[9] Electron emission in intense electric fields [J].

Fowler, RH ;

Nordheim, L .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-CONTAINING PAPERS OF A MATHEMATICAL AND PHYSICAL CHARACTER, 1928, 119 (781) :173-181

[10] Growth characteristics of carbon nanotubes using platinum catalyst by plasma enhanced chemical vapor deposition [J].

Han, JH ;

Choi, SH ;

Lee, TY ;

Yoo, JB ;

Park, CY ;

Jung, T ;

Yu, SG ;

Yi, W ;

Han, IT ;

Kim, JM .

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