Exciton Transport in Suspended Single Carbon Nanotubes Studied by Photoluminescence Imaging Spectroscopy
Source abstract
Abstract
We studied the spatial profiles and time traces of the photoluminescence (PL) intensity of suspended single-walled carbon nanotubes (SWNTs) using a microscopic PL imaging technique. These PL images, obtained in different gases, showed that adsorbed oxygen molecules act as PL quenchers in SWNTs. The exciton transport length of suspended SWNTs was estimated to be ∼200 nm at room temperature. We found that the exciton transport and its temperature dependence are dominated by the diffusive motion of a one-dimensional exciton in a single carbon nanotube.
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Research context
OpenAlex topics: Carbon Nanotubes in Composites · Mechanical and Optical Resonators · Nanotechnology research and applications
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