Diameter dependence of exciton-phonon interaction in individual single-walled carbon nanotubes studied by micro- photoluminescence spectroscopy
نویسندگان
چکیده
We have investigated the diameter dependence of the exciton luminescence linewidth in individual single-walled carbon nanotubes (SWNTs) by means of microphotoluminescence (μ-PL) spectroscopy. The lineshapes of μ-PL spectra for single SWNTs suspended on a patterned Si substrate at room temperature can be fitted by single Lorentzian functions. It is found that the μ-PL linewidth depends strongly on the diameter of SWNTs and the exciton-phonon interaction is enhanced with a decrease of the diameter. PACS: 78.67.Ch, 78.55-m
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