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Raman spectroelectrochemistry on SWNTs at higher doping levels: Evidence for a transition to intercalative doping

MPS-Authors
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Dettlaf-Weglikowska,  U.
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Hornbostel,  B.
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Roth,  S.
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Rafailov, P. M., Thomsen, C., Dettlaf-Weglikowska, U., Hornbostel, B., & Roth, S. (2007). Raman spectroelectrochemistry on SWNTs at higher doping levels: Evidence for a transition to intercalative doping. physica status solidi (b), 244(11), 4060-4063.


Cite as: https://hdl.handle.net/21.11116/0000-000E-B7B9-3
Abstract
We studied the transition from the electrochemical double-layer charging regime to intercalative doping of SWNT buckypaper in KC1 aqueous solution. For this purpose we used doping levels by applying constant potentials above 1 V approaching and slightly exceeding the oxidation potential for Cl- ions. At each potential in situ Raman measurements of the radial breathing mode (RBM), the high-energy tangential mode (HEM) and the disorder-induced (D) mode were performed. From a comparative analysis of the Raman spectra we conclude that above I V a significant penetration of chlorine species into the interstitial channels of the SANT bundles and possibly functionalization take place. (c) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.