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...

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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
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Language:English
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container_issue 20
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creator Wu, Z. S.
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description 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.
doi_str_mv 10.1063/1.1476703
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title Needle-shaped silicon carbide nanowires: Synthesis and field electron emission properties
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