Length-dependent performances of sodium deoxycholate-dispersed single-walled carbon nanotube thin-film transistors
The material characteristics of single-walled carbon nanotubes (SWCNTs) influence the performance of SWCNT thin-film transistors (TFTs). In this study, a density gradient ultracentrifugation method was used to sort surfactant (sodium deoxycholate)-dispersed SWCNTs by length. SWCNTs of 150 ± 33 nm an...
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sg-ntu-dr.10356-1011832020-09-26T22:10:13Z Length-dependent performances of sodium deoxycholate-dispersed single-walled carbon nanotube thin-film transistors Si, Rongmei Wang, Hong Wei, Li Chen, Yuan Wang, Zhenfeng Wei, Jun School of Chemical and Biomedical Engineering A*STAR SIMTech DRNTU::Engineering::Chemical engineering The material characteristics of single-walled carbon nanotubes (SWCNTs) influence the performance of SWCNT thin-film transistors (TFTs). In this study, a density gradient ultracentrifugation method was used to sort surfactant (sodium deoxycholate)-dispersed SWCNTs by length. SWCNTs of 150 ± 33 nm and 500 ± 91 nm long were fabricated into TFTs. The results show that the performance of SWCNT-TFTs is tube length dependent. TFTs fabricated using 500-nm long tubes have maximum on/off ratio around 105 with the mobility at ∼0.15 cm2/(V s), which is much higher than that of TFTs using 150-nm long tubes. Shorter tubes need higher tube density to form semiconducting paths, leading to lower on/off ratio and high contact resistance. Surfactant-wrapped SWCNTs will bundle into ropes of different size when tube density is high. It is critical to control tube length as well as surfactant residue content to build high performance SWCNT-TFTs. Published version 2014-01-08T01:10:48Z 2019-12-06T20:34:52Z 2014-01-08T01:10:48Z 2019-12-06T20:34:52Z 2012 2012 Journal Article Si, R., Wang, H., Wei, L., Chen, Y., Wang, Z., & Wei, J. (2013). Length-dependent performances of sodium deoxycholate-dispersed single-walled carbon nanotube thin-film transistors. Journal of materials research, 28(07), 1004-1011. https://hdl.handle.net/10356/101183 http://hdl.handle.net/10220/18415 10.1557/jmr.2012.321 en Journal of materials research © 2012 Materials Research Society. This paper was published in Journal of Materials Research and is made available as an electronic reprint (preprint) with permission of Materials Research Society. The paper can be found at the following official DOI: [http://dx.doi.org/10.1557/jmr.2012.321]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf |
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DRNTU::Engineering::Chemical engineering Si, Rongmei Wang, Hong Wei, Li Chen, Yuan Wang, Zhenfeng Wei, Jun Length-dependent performances of sodium deoxycholate-dispersed single-walled carbon nanotube thin-film transistors |
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The material characteristics of single-walled carbon nanotubes (SWCNTs) influence the performance of SWCNT thin-film transistors (TFTs). In this study, a density gradient ultracentrifugation method was used to sort surfactant (sodium deoxycholate)-dispersed SWCNTs by length. SWCNTs of 150 ± 33 nm and 500 ± 91 nm long were fabricated into TFTs. The results show that the performance of SWCNT-TFTs is tube length dependent. TFTs fabricated using 500-nm long tubes have maximum on/off ratio around 105 with the mobility at ∼0.15 cm2/(V s), which is much higher than that of TFTs using 150-nm long tubes. Shorter tubes need higher tube density to form semiconducting paths, leading to lower on/off ratio and high contact resistance. Surfactant-wrapped SWCNTs will bundle into ropes of different size when tube density is high. It is critical to control tube length as well as surfactant residue content to build high performance SWCNT-TFTs. |
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School of Chemical and Biomedical Engineering |
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School of Chemical and Biomedical Engineering Si, Rongmei Wang, Hong Wei, Li Chen, Yuan Wang, Zhenfeng Wei, Jun |
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Article |
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Si, Rongmei Wang, Hong Wei, Li Chen, Yuan Wang, Zhenfeng Wei, Jun |
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Si, Rongmei |
title |
Length-dependent performances of sodium deoxycholate-dispersed single-walled carbon nanotube thin-film transistors |
title_short |
Length-dependent performances of sodium deoxycholate-dispersed single-walled carbon nanotube thin-film transistors |
title_full |
Length-dependent performances of sodium deoxycholate-dispersed single-walled carbon nanotube thin-film transistors |
title_fullStr |
Length-dependent performances of sodium deoxycholate-dispersed single-walled carbon nanotube thin-film transistors |
title_full_unstemmed |
Length-dependent performances of sodium deoxycholate-dispersed single-walled carbon nanotube thin-film transistors |
title_sort |
length-dependent performances of sodium deoxycholate-dispersed single-walled carbon nanotube thin-film transistors |
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2014 |
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https://hdl.handle.net/10356/101183 http://hdl.handle.net/10220/18415 |
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