Raman spectroscopy and field emission measurements on catalytically grown carbon nanotubes

Details Raman spectroscopy and field emission measurements on catalytically grown carbon nanotubes Raman spectroscopy and field emission measurements on catalytically grown carbon nanotubes

2005-08-27

arxiv.org/abs/cond-mat/0508657v2

J. Phys. Chem. B 106 (2002) 11191

Physics

Condensed Matter

Materials Science

6 pages, 6 figures, 1 table

Scientific paper

10.1021/jp0215217

We used microcontact printing to pattern a silicon surface with an iron-containing catalytic solution. Multi-wall carbon nanotubes were subsequently grown on the patterned areas by chemical vapor deposition at temperatures between 650 and 1000C. We demonstrate that the diameter of the catalytically grown multi-wall nanotubes increases with the deposition temperature. Raman spectroscopy has been used to investigate the crystalline character of the obtained structures and it is found that the fraction of the nano-crystalline shell increases with the temperatures. The measurement of the field emission properties shows a correlation between the tube diameter and the emission field values.

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