Ion irradiation effects on conduction in single-wall carbon nanotube networks

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Abstract

We have measured how irradiation by Ar+ and N+ ions modifies electronic conduction in single-wall carbon nanotube (SWNT) networks, finding dramatically different effects for different thicknesses. For very thin transparent networks, ion irradiation increases localization of charge carriers and reduces the variable-range hopping conductivity, especially at low temperatures. However, for thick networks (SWNT paper) showing metallic conductivity, we find a relatively sharp peak in conductivity as a function of irradiation dose. Our investigation of this peak reveals the important role of thermal annealing extending beyond the range of the irradiating ions, and shows the dependence on the morphology of the samples. We propose a simple model that accounts for the temperature-dependent conductivity. © 2008 Springer-Verlag.

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CITATION STYLE

APA

Skákalová, V., Kaiser, A. B., Osváth, Z., Vértesy, G., Biró, L. P., & Roth, S. (2008). Ion irradiation effects on conduction in single-wall carbon nanotube networks. Applied Physics A: Materials Science and Processing, 90(4), 597–602. https://doi.org/10.1007/s00339-007-4383-0

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