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

Yuhei Miyauchi·Shigeo Maruyama
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Abstract

We have studied photoluminescence (PL) and resonant Raman scatterings of single-walled carbon nanotubes (SWNTs) consisting of carbon-13 (SW13CNTs) synthesized from a small amount of isotopically modified ethanol. There was almost no change in the Raman spectra shape for SW13CNTs except for a downshift of the Raman shift frequency by the square-root of the mass ratio 12/13. By comparing photoluminescence excitation (PLE) spectra of SW13CNTs and normal SWNTs, the excitonic phonon sideband due to strong exciton-phonon interaction was clearly identified with the expected isotope shift.

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Yuhei Miyauchi, Shigeo Maruyama. 2005-08-09. Identification of excitonic phonon sideband by photoluminescence spectroscopy of single-walled carbon-13 nanotubes. https://doi.org/10.1103/physrevb.74.035415

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