Needle-shaped silicon carbide nanowires: Synthesis and field electron emission properties

Bunches of needle-shaped silicon carbide (SiC) nanowires were grown from commercially available SiC powders in thermal evaporation process and using iron as catalyst. Their structure and chemical composition were studied by Raman spectroscopy and high-resolution transmission electron microscopy. The...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2002-05, Vol.80 (20), p.3829-3831
Main Authors: Wu, Z. S., Deng, S. Z., Xu, N. S., Chen, Jian, Zhou, J., Chen, Jun
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Bunches of needle-shaped silicon carbide (SiC) nanowires were grown from commercially available SiC powders in thermal evaporation process and using iron as catalyst. Their structure and chemical composition were studied by Raman spectroscopy and high-resolution transmission electron microscopy. The powder of these nanowires may be easily dispersed, and was used to form samples of field electron emitters. The needle shape of individual nanowires is well-suited to field electron emission. Stable emission with current density of 30.8 mA/cm2 was observed at fields as low as 9.6 V/μm, and current density of up to 83 mA/cm2 was recorded.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1476703