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

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• 作者：Laura Oudjedi ; A. Nicholas G. Parra-Vasquez ; Antoine G. Godin ; Laurent Cognet ; Brahim Lounis
• 刊名：The Journal of Physical Chemistry Letters
• 出版年：2013
• 出版时间：May 2, 2013
• 年：2013
• 卷：4
• 期：9
• 页码：1460-1464
• 全文大小：311K
• 年卷期：v.4,no.9(May 2, 2013)
• ISSN：1948-7185

文摘

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 脳 10^鈥?7 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鈥搇uminescence microscopies performed on long nanotubes reveal a direct manifestation of exciton diffusion in the nanotube.

Keywords:

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