Influence of the diameter of single-walled carbon nanotube bundles on the optoelectronic performance of dry-deposited thin films
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© 2012 Mustonen et al. Published under the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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School of Science |
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2012
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Mcode
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Language
en
Pages
692-702
Series
Beilstein Journal of Nanotechnology, Volume 3
Abstract
The optoelectronic performance of thin films of single-walled carbon nanotubes (SWCNTs) was studied with respect to the properties of both individual nanotubes and their bundles. The SWCNTs were synthesized in a hot wire generator aerosol reactor, collected by gas filtration and dry-transferred onto various substrates. By thus completely avoiding liquid dispersion steps, we were able to avoid any artifacts from residual surfactants or sonication. We found that bundle lengths determined the thin-film performance, as would be expected for highly resistive bundle–bundle junctions. However, we found no evidence that contact resistances were affected by the bundle diameters, although they did play a secondary role by simply affecting the absorption. The individual SWCNT diameters and their graphitization level as gauged by the Raman D band intensity did not show any clear correlation with the overall performance.Description
Keywords
SWCNTs, bundle diameter, thin films, sheet resistance, transmittance
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Citation
Mustonen, Kimmo & Susi, Toma & Kaskela, Antti & Laiho, Patrik & Tian, Ying & Nasibulin, Albert G. & Kauppinen, Esko I. 2012. Influence of the diameter of single-walled carbon nanotube bundles on the optoelectronic performance of dry-deposited thin films. Beilstein Journal of Nanotechnology. Volume 3. 692-702. ISSN 2190-4286 (printed). DOI: 10.3762/bjnano.3.79