Metrological Investigation of the (6,5) Carbon Nanotube Absorption Cross Section.
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.
†University of Bordeaux, LP2N, F-33405 Talence, France.
Laura
L
Oudjedi
†University of Bordeaux, LP2N, F-33405 Talence, France.
A Nicholas G
AN
Parra-Vasquez
†University of Bordeaux, LP2N, F-33405 Talence, France.
Antoine G
AG
Godin
†University of Bordeaux, LP2N, F-33405 Talence, France.
Laurent
L
Cognet
†University of Bordeaux, LP2N, F-33405 Talence, France.
Brahim
B
Lounis
absorption cross section; carbon nanotubes; exciton diffusion; luminescence; single-molecule microscopy