Highly individual SWCNTs for high performance thin film electronics

We report a continuous floating catalyst chemical vapor deposition synthesis of highly individual single-walled carbon nanotubes (SWCNT) for high performance transparent conducting films (TCF). Active feedback dilution of ferrocene-based catalyst vapor leads to an almost complete elimination of SWCN...

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Bibliographic Details
Published inCarbon (New York) Vol. 103; pp. 228 - 234
Main Authors Kaskela, Antti, Laiho, Patrik, Fukaya, Norihiro, Mustonen, Kimmo, Susi, Toma, Jiang, Hua, Houbenov, Nikolay, Ohno, Yutaka, Kauppinen, Esko I.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.07.2016
Subjects
carbon
carbon nanotubes
catalysts
electronics
transmittance
vapors
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ISSN0008-6223
1873-3891
DOI10.1016/j.carbon.2016.02.099

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Summary:We report a continuous floating catalyst chemical vapor deposition synthesis of highly individual single-walled carbon nanotubes (SWCNT) for high performance transparent conducting films (TCF). Active feedback dilution of ferrocene-based catalyst vapor leads to an almost complete elimination of SWCNT bundling and a substantial increase in SWCNT lengths via the suppression of bundling-induced growth termination. The fabricated uniform TCFs exhibit sheet resistances of 89 Ω/sq. at 90% transmittance. This was further improved by micro-patterning, resulting in a sheet resistance of 69 Ω/sq. at 97% transmittance – the highest reported for any carbon nanotube TCF – and highly competitive with commercial indium-tin-oxide-TCFs. Furthermore, we demonstrate that thin film transistors fabricated from these highly individual SWCNTs reach charge carrier mobilities up to 100 cm2 V−1s−1 and ON/OFF-ratios up to 106.
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ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2016.02.099