Nitrogen ion implantation in single wall carbon nanotubes |
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Authors: | F. Xu M. Minniti C. Giallombardo A. Cupolillo P. Barone A. Oliva L. Papagno |
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Affiliation: | Dipartimento di Fisica, Università della Calabria, INFN, Gruppo Collegato di Cosenza, 87036 Arcavacata di Rende, Cosenza, Italy |
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Abstract: | We report an X-ray photoemission and electron energy loss study on 3 keV ion implantation in single wall carbon nanotubes. Our results show that nitrogen atoms can bind to carbon in tetrahedral sp3, defects related pyridine-like, and triangular sp2 configurations and such bondings are stable for annealing up to 650 K. Heating at higher temperatures results in preferential substitutional nitrogen doping. This technique opens a new channel for controlled doping in carbon nanotubes for device applications. |
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Keywords: | Ion bombardment Ion implantation Photoelectron emission Nitrogen molecule Carbon nanotubes |
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