Influences of temperature on the Raman spectra of single-walled carbon nanotubes

Qing Zhang; Da Jiang Yang; S. G. Wang; Soon Fatt Yoon; Jaeshin Ahn

doi:10.1117/12.528690

29 March 2004 Influences of temperature on the Raman spectra of single-walled carbon nanotubes

Qing Zhang, Da Jiang Yang, S. G. Wang, Soon Fatt Yoon, Jaeshin Ahn

Proceedings Volume 5275, BioMEMS and Nanotechnology; (2004) https://doi.org/10.1117/12.528690
Event: Microelectronics, MEMS, and Nanotechnology, 2003, Perth, Australia

Abstract

The Raman spectra for single-walled carbon nanotubes (SWNTs) at different temperatures are studied. We find that the G peak position shifts to low frequency with increasing temperature. The variation rate of the peak frequency as a function of temperature is a factor of 2~3 larger than the corresponding G peak frequency variation rates of multiwalled carbon nanotubes and highly ordered pyrolytic graphite from room temperature to 673 K. The line shapes of the RBM features are also found to be sensitive to temperature. The softening of the interatomic force constant due to thermal expansion of C-C bonds and the relaxation of the weak van der Waals interaction between the SWNTs in a bundle with increasing temperature are suggested to be the main origins of the reversible spectral variations.

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Qing Zhang, Da Jiang Yang, S. G. Wang, Soon Fatt Yoon, and Jaeshin Ahn "Influences of temperature on the Raman spectra of single-walled carbon nanotubes", Proc. SPIE 5275, BioMEMS and Nanotechnology, (29 March 2004); https://doi.org/10.1117/12.528690

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KEYWORDS

Single walled carbon nanotubes

Raman spectroscopy

High temperature raman spectroscopy

Carbon

Carbon nanotubes

Raman scattering

Photons

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