Abstract
We have experimentally investigated the relaxation dynamics of photoexcited states in semiconducting single-walled carbon nanotubes by means of femtosecond spectroscopy. The photoexcited electrons and holes are nonradiatively recombined via multi-phonon emission process within ∼1 ps . The tube diameter dependence of decay time suggests that the electron–phonon interaction is enhanced by decreasing the tube diameter.
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