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Title of article :
Temperature dependence of the raman spectra of carbon nanotubes with 1064 nm excitation
Author/Authors :
C.-L. Wang and Y. Ouyang، نويسنده , , Y. Fang، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2004
Pages :
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Abstract :
In this report, the near infrared 1064 nm line of an Nd:YAG laser, which has strong thermal effect, was used as the excitation. A temperature dependence of the Raman spectra of carbon nanotubes was observed at different temperatures by varying the incident laser power. The results show that the relative Raman intensities to the tangential stretching mode (G mode) of the higher-order Raman modes within 2500–3500 cm−1 increase with increasing excitation laser power at the sample and the changes in the relative Raman intensities are linear in the excitation laser power. This has not been reported elsewhere. Thorough analysis shows that this is a temperature dependence of double-phonon Raman scattering and maybe provide important information for the studying of CNTs and double-phonon Raman scattering.
Keywords :
Single-walled carbon nanotubes , Multi-walled carbon nanotubes , Raman spectroscopy , Thermal effect
Journal title :
Physica E Low-dimensional Systems and Nanostructures
Serial Year :
Link To Document :