Single walled carbon nanotubes: A model system for excitons in one dimension

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Proceedings titleProceedings of SPIE - The International Society for Optical Engineering
ConferenceSynthesis and Photonics of Nanoscale Materials VIII, 24 January 2011 through 25 January 2011, San Francisco, CA
Article number792206
SubjectBand gaps; Carbon rings; Complementary data; Discrete numbers; Excitonic state; Large diameter; Luminescence imaging; Luminescence properties; Model system; Nano-materials; One dimension; Optical spectroscopy; Photophysics; Tubular sections; Tunabilities; Carbon nanotubes; Excitons; Imaging techniques; Luminescence; Nanostructured materials; Tubular steel structures; Single-walled carbon nanotubes (SWCN)
AbstractThe semiconducting single walled carbon nanotube (s-SWNTs) with its direct bandgap and its strong 1D character absorbs and emits light efficiently. In contrast with other nanomaterials, the structure of an SWNT is uniquely defined and is set by a discrete number of carbon rings along its tubular section. Experimentally, optical spectroscopy has recently revealed this remarkable quantization. In our group, we focus primarily on the luminescence properties of individual s-SWNTs. Using imaging techniques, we reveal unambiguously that each s-SWNT with its quantized structure is characterized by a specific manifold of excitonic states. With the large diameter tunability achieved in SWNTs, we show that the material represents a model system for 1D photophysics. This proceeding is meant to be a review of past work and includes complementary data that have been presented at conferences but otherwise have never been published. Some emphasis is given on experimental details for luminescence imaging and spectroscopy. © 2011 SPIE.
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AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Microstructural Sciences (IMS-ISM)
Peer reviewedYes
NPARC number21271267
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Record identifier5bcb7723-d7f4-44fc-a8f8-f71f2d097e3e
Record created2014-03-24
Record modified2016-05-09
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