Transparent conductive single-walled carbon nanotube networks with precisely tunable ratios of semiconducting and metallic nanotubes

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We present a comprehensive study of the optical and electrical properties of transparent conductive films made from precisely tuned ratios of metallic and semiconducting single-wall carbon nanotubes. The conductivity and transparency of the SWNT films are controlled by an interplay between localized and delocalized carriers, as determined by the SWNT electronic structure, tube-tube junctions, and intentional and unintentional redox dopants. The results suggest that the main resistance in the SWNT thin films is the resistance associated with tube-tube junctions. Redox dopants are found to increase the delocalized carrier density and transmission probability through intertube junctions more effectively for semiconductor-enriched films than for metal-enriched films. As a result, redox-doped semiconductor-enriched films are more conductive than either intrinsic or redox-doped metal-enriched films.
Publisher
AMER CHEMICAL SOC
Issue Date
2008-06
Language
English
Article Type
Article
Keywords

TRANSISTORS; FILMS; SPECTRA; ACID

Citation

ACS NANO, v.2, no.6, pp.1266 - 1274

ISSN
1936-0851
DOI
10.1021/nn800200d
URI
http://hdl.handle.net/10203/90710
Appears in Collection
NT-Journal Papers(저널논문)
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