Abstract
We report time-resolved incoherent anti-Stokes Raman scattering measurements of the dynamics of the D and G′ bands in single-walled carbon nanotubes at excitation energies of 1.51 and 1.63 eV over the temperature range 4-330 K. The measurements indicate that the population lifetimes (∼1 ps) of the phonons responsible for the D band are dependent on nanotube type. The temperature dependencies are consistent with anharmonic decay of the phonons into one low (<190 cm-1) and one high energy phonon.
Original language | English |
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Pages (from-to) | 416-422 |
Number of pages | 7 |
Journal | Nano Letters |
Volume | 13 |
Issue number | 2 |
DOIs | |
State | Published - Feb 13 2013 |
Externally published | Yes |
Keywords
- Nanotube
- Raman
- anharmonic
- lifetime
- phonon