Single-phase tungsten carbide nanopillar arrays prepared by chemical vapor deposition

Single-phase tungsten carbide nanopillar arrays have been prepared by hot filament chemical vapor deposition with carbonized tungsten filaments as precursors. The structural properties and morphologies of the nanopillar arrays were characterized by XRD, SEM and HRTEM, respectively. A possible format...

Full description

Saved in:
Bibliographic Details
Published inRSC advances Vol. 2; no. 19; pp. 7403 - 7405
Main Authors Teng, Feng, Wang, Jiangtao, An, Xiuyun, Lu, Bingan, Su, Yurong, Gong, Chengshi, Zhang, Peng, Zhang, Zhenxing, Xie, Erqing
Format Journal Article
LanguageEnglish
Published 01.01.2012
Subjects
Arrays
Chemical vapor deposition
Filaments
Morphology
Nanocomposites
Nanomaterials
Nanostructure
Tungsten carbide
Online AccessGet full text

Cover

More Information
Summary:Single-phase tungsten carbide nanopillar arrays have been prepared by hot filament chemical vapor deposition with carbonized tungsten filaments as precursors. The structural properties and morphologies of the nanopillar arrays were characterized by XRD, SEM and HRTEM, respectively. A possible formation mechanism for the morphology was proposed. Moreover, the field emission properties of the nanopillar arrays have been studied. The Fowler-Nordheim plot of the nanopillar arrays shows an interesting linear dependence demonstrating their suitability as emitters. The nanopillar arrays show remarkable stability for several hours at a current intensity of about 5.6 10 super(-7) A at 2000 V with a distance between the anode and sample of 150 mu m.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:2046-2069
2046-2069
DOI:10.1039/c2ra21246c