Metrological Investigation of the (6,5) Carbon Nanotube Absorption Cross Section

Laura Oudjedi (1) , A. Nicholas G. Parra-Vasquez (2) , Antoine Godin (1) , Laurent Cognet (1) , Brahim Lounis (1)

1 lp2n-01,lp2n-12
2 LP2N - Laboratoire Photonique, Numérique et Nanosciences

Using single-nanotube absorption microscopy, we measured the absorption cross section of (6,5) carbon nanotubes at their second-order optical transition. We obtained a value of 3.2 × 10-17 cm2/C atom with a precision of 15% and an accuracy below 20%. This constitutes the first metrological investigation of the absorption cross section of chirality-identified nanotubes. Correlative absorption-luminescence microscopies performed on long nanotubes reveal a direct manifestation of exciton diffusion in the nanotube.

Domaines: Autre [cond-mat.other]

Laura Oudjedi, A. Nicholas G. Parra-Vasquez, Antoine Godin, Laurent Cognet, Brahim Lounis. Metrological Investigation of the (6,5) Carbon Nanotube Absorption Cross Section. Journal of Physical Chemistry Letters, 2013, 4, pp.1460. ⟨10.1021/jz4003372⟩. ⟨hal-00909291⟩