Observation of exciton-phonon sideband in individual metallic single-walled carbon nanotubes.

Title Observation of exciton-phonon sideband in individual metallic single-walled carbon nanotubes

Direct experimental evidence of exciton-phonon bound states in carbon nanotubes.

We present direct experimental observation of exciton-phonon bound states in the photoluminescence excitation spectra of isolated single-walled carbon nanotubes (SWNT) in aqueous suspension. The photoluminescence excitation spectra from several distinct SWNTs show the presence of at least one sideband related to the tangential modes, lying 0.2 eV above the main absorption or emission peak. Both...

Micro-Photoluminescence Spectroscopy of Excitons in Individual Single-Walled Carbon Nanotubes

Single-walled carbon nanotubes (SWNTs) are fascinating materials to study onedimensional photophysics. Their optical properties are strongly affected by strong Coulomb interactions and are determined by ”excitons” which represent the quantum of polarization in non-metallic solids. In this thesis dissertation we have experimentally investigated both the structure and the dynamics of excitons in ...

Photoluminescence studies of cross-polarized absorption of single-walled carbon nanotubes

Though our previous studies of photoluminescence (PL) of single-walled carbon nanotubes (SWNTs) consisting of carbon-13 (SW 13 CNTs) synthesized from isotopically modified ethanol [1], we have found the excitonic phonon sideband peak due to the strong exciton-phonon interaction with the expected isotope shift [2]. Phonon sideband features observed for (7,5) and (6,5) nanotubes are remarkably si...

Identification of excitonic phonon sideband by photoluminescence spectroscopy of single-walled carbon-13 nanotubes

Department of Mechanical Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan (Received 9 August 2005) Abstract We have studied photoluminescence (PL) and resonant Raman scatterings of single-walled carbon nanotubes (SWNTs) consisting of carbon-13 (SWCNTs) synthesized from a small amount of isotopically modified ethanol. There was almost no change in the Raman spe...