Synthesis and atmospheric pressure field emission operation of W18O49 nanorods

被引：27

作者：

Agiral, Anil ^{[1
]}

Gardeniers, J. G. E. ^{[1
]}

机构：

[1] Univ Twente, MESA Inst Nanotechnol, Fac Sci & Technol, NL-7500 AE Enschede, Netherlands

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 39期

关键词：

D O I：

10.1021/jp802756y

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：

Tungsten oxide W18O49 nanorods with diameters of 15-20 nm were grown on tungsten thin films exposed to ethene and nitrogen at 700 degrees C at atmospheric pressure. It was found that tungsten carbide formation enhances nucleation and growth of nanorods. Atmospheric pressure field emission measurements in air showed a turn-on field of 3.3 V/mu m and stable and reproducible emission current density (28 mA/cm(2)). At low current densities (<20 mA/cm(2)), the field emission current follows the Fowler-Nordheim model; saturation effects were observed above 20 mA/cm(2).

引用

页码：15183 / 15189

页数：7

共 33 条

[1] Growth of tungsten oxide nanowires using simple thermal heating [J].

Chen, G. Y. ;

Stolojan, V. ;

Cox, D. C. ;

Giusca, C. ;

Silva, S. R. P. .

2006 IEEE CONFERENCE ON EMERGING TECHNOLOGIES - NANOELECTRONICS, 2006, :376-+

[2] Evolution of tungsten-oxide whiskers synthesized by a rapid thermal-annealing treatment [J].

Cho, MH ;

Park, SA ;

Yang, KD ;

Lyo, IW ;

Jeong, K ;

Kang, SK ;

Ko, DH ;

Kwon, KW ;

Ku, JH ;

Choi, SY ;

Shin, HJ .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 2004, 22 (03) :1084-1087

[3] Normal-emission photoelectron studies of the W(110)(1 x 1)O surface [J].

Feydt, J ;

Elbe, A ;

Engelhard, H ;

Meister, G ;

Goldmann, A .

SURFACE SCIENCE, 1999, 440 (1-2) :213-220

[4] AN XPS STUDY OF THE UV REDUCTION AND PHOTOCHROMISM OF MOO3 AND WO3 [J].

FLEISCH, TH ;

MAINS, GJ .

JOURNAL OF CHEMICAL PHYSICS, 1982, 76 (02) :780-786

[5] Some comments on models for field enhancement [J].

Forbes, RG ;

Edgcombe, CJ ;

Valdrè, U .

ULTRAMICROSCOPY, 2003, 95 (1-4) :57-65

[6] Low-macroscopic-field electron emission from carbon films and other electrically nanostructured heterogeneous materials: hypotheses about emission mechanism [J].

Forbes, RG .

SOLID-STATE ELECTRONICS, 2001, 45 (06) :779-808

[7] Field emission: New theory for the derivation of emission area from a Fowler-Nordheim plot [J].

Forbes, RG .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1999, 17 (02) :526-533

[8] Reformulation of the standard theory of Fowler-Nordheim tunnelling and cold field electron emission [J].

Forbes, Richard G. ;

Deane, Jonathan H. B. .

PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2007, 463 (2087) :2907-2927

[9] FIELD-EMISSION AND VACUUM BREAKDOWN [J].

FURSEY, GN .

IEEE TRANSACTIONS ON ELECTRICAL INSULATION, 1985, 20 (04) :659-670

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

Fursey, GN .

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

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