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Issue 11, 2015
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Selective decoration of isolated carbon nanotubes by potassium evaporation: scanning photoemission microscopy and density functional theory

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Abstract

Site selective doping of aligned carbon nanostructures represents a promising approach for their implementation in actual devices. In the present work we report on alkali metals decoration on low density vertically aligned carbon nanotubes, disclosing the possibility of engineering site selective depositions of potassium atoms on the carbon systems. Photoemission measurements were combined with microscopy demonstrating the effective spatial control of alkali deposition. The changes of electronic structures of locally doped carbon regions were studied by exploiting the ability of the scanning photoemission microscopy technique. From the analysis of experimental data supported by theoretical calculations, we show the tuning of the charge transfer from potassium to carbon atoms belonging to neighboring nanotubes or along the same tube structure.

Graphical abstract: Selective decoration of isolated carbon nanotubes by potassium evaporation: scanning photoemission microscopy and density functional theory

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Publication details

The article was received on 30 Oct 2014, accepted on 28 Dec 2014 and first published on 30 Dec 2014


Article type: Paper
DOI: 10.1039/C4TC02478H
Citation: J. Mater. Chem. C, 2015,3, 2518-2527
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    Selective decoration of isolated carbon nanotubes by potassium evaporation: scanning photoemission microscopy and density functional theory

    C. Struzzi, D. Erbahar, M. Scardamaglia, M. Amati, L. Gregoratti, M. J. Lagos, G. Van Tendeloo, R. Snyders, C. Ewels and C. Bittencourt, J. Mater. Chem. C, 2015, 3, 2518
    DOI: 10.1039/C4TC02478H

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