M. Kharlamova, C. Kramberger, P. Rudatis, K. Yanagi, D. Eder:
"Characterization of the Electronic Properties of Single‐Walled Carbon Nanotubes Filled with an Electron Donor-Rubidium Iodide: Multifrequency Raman and X‐ray Photoelectron Spectroscopy Studies";
Physica Status Solidi B - Basic Solid State Physics,
Single-walled carbon nanotubes (SWCNTs) with a mean diameter of 1.4 nm arefilled with rubidium iodide. Thefilling of nanotubes is proved by high-resolutionscanning transmission electron microscopy. The chemical composition of thefiller is confirmed by X-ray photoelectron spectroscopy (XPS). The electronicproperties of thefilled SWCNTs are studied by XPS and Raman spectroscopy. Theencapsulated salt leads to n-doping of nanotubes. The detailed multifrequencyRaman spectroscopy investigation of the alteration of Raman modes of SWCNTsuponfilling is conducted. The doping-induced changes in the radial breathingmode and G-band are revealed. It is found that these changes differ for themetallic and semiconducting SWCNTs. The obtained data and revealed trendsare expected to be helpful for forthcoming studies to interpret the observedchanges in Raman spectra offilled metallic and semiconducting SWCNTs.
Erstellt aus der Publikationsdatenbank der Technischen Universitšt Wien.