Effects of ion beam heating on Raman spectra of single-walled carbon nanotubes

Journal Article · Mon Feb 16 00:00:00 EST 2009 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3077311· OSTI ID:21175971

Hulman, Martin ^[1]; Skakalova, Viera ^[2]; Krasheninnikov, A V ^[3]; Roth, S ^[4]

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1. Austrian Research Centers, A-2444 Seibersdorf (Austria)
2. Danubia NanoTech s.r.o., Ilkovicova 3, 81219 Bratislava (Slovakia)
3. Materials Physics Division, University of Helsinki, P.O. Box 43, FI-00014 (Finland)
4. Max-Planck Institut fuer Festkoerperforschung, Heisenbergstr.1, 70569 Stuttgart (Germany)

Free standing films of single-wall carbon nanotubes were irradiated with energetic N{sup +} and C{sup 4+} ions. The observed changes in the Raman line shape of the radial breathing mode and the G band of the C{sup 4+} irradiated samples were similar to those found for a thermally annealed sample. We ascribe these changes to thermal desorption of volatile dopants from the initially doped nanotubes. A simple geometry of the experiment allows us to estimate the temperature rise by one-dimensional heat conductance equation. The calculation indicates that irradiation-mediated increase in temperature may account for the observed Raman spectra changes.

• OSTI ID: 21175971
• Journal Information: Applied Physics Letters, Vol. 94, Issue 7; Other Information: DOI: 10.1063/1.3077311; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
CARBON
CARBON IONS
DESORPTION
DOPED MATERIALS
EQUATIONS
HEATING
ION BEAMS
NANOTUBES
NITROGEN IONS
ONE-DIMENSIONAL CALCULATIONS
RAMAN SPECTRA
THIN FILMS