Measurements of the population lifetime of D band and G' band phonons in single-walled carbon nanotubes.
basic_science · Level V
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- Record sourced from PubMed, PMID 23297761.
- Also identified by DOI 10.1021/nl303569n.
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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.