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

Laura Oudjedi; A Nicholas G Parra-Vasquez; Antoine G Godin; Laurent Cognet; Brahim Lounis

doi:10.1021/jz4003372

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

J Phys Chem Lett. 2013 May 2;4(9):1460-4. doi: 10.1021/jz4003372. Epub 2013 Apr 16.

Authors

Laura Oudjedi¹, A Nicholas G Parra-Vasquez¹, Antoine G Godin¹, Laurent Cognet¹, Brahim Lounis¹

Affiliation

¹ †University of Bordeaux, LP2N, F-33405 Talence, France.

PMID: 26282299
DOI: 10.1021/jz4003372

Abstract

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) cm(2)/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.

Keywords: absorption cross section; carbon nanotubes; exciton diffusion; luminescence; single-molecule microscopy.