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p-type thin film transistors reliably exhibit high-mobilities (> 10 cm^2/V/s) and ON/OFF ratios (> 10^3) and threshold voltages below 5 V. Nanotube-enabled thin-film transistors thus offer high mobility and current density, low power consumption as well as environmental stability and especially mechanical flexibility.
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Highly graphitized single-wall carbon nanotubes grown using an industrial-scale plasma torch. Nanotubes are grown using a plasma torch display diameters, lengths, and purity levels comparable to the arc and laser methods. The nanotubes measure between 1 and 1.5 nm in diameter and between 0.3-5
137:
Enriched
Semiconducting carbon nanotubes (sc-SWCNT) using either a density-gradient ultracentrifugation (DGU) or a polymer-wrapping (conjugated polymer extraction(CPE)) method. While the DGU method is used to disperse and enrich sc-SWCNT in an aqueous solution, the CPE method disperses and enriches
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nanotubes, that can be processed with this technology. NanoIntegris has recently licensed a new process using selective wrapping of semiconducting nanotubes with conjugated polymers. This method is scalable thus enabling the supply of this material in large quantities for commercial applications.
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and display applications" compared to standard carbon nanotubes. More recently, nanotube-based thin film transistors have been printed using inkjet or gravure methods on a variety of flexible substrates including polyimide and polyethylene (PET) and transparent substrates such as glass. These
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which allowed for those nanotubes with semi-conductive properties to be separated from those with conductive properties. While the DGU method was the first one to convincingly produce high-purity semiconducting carbon nanotubes, the rotation speeds involved limit the amount of liquid, and thus
538:
Wang, Chuan; Chien, Jun-Chau; Takei, Kuniharu; Takahashi, Toshitake; Nah, Junghyo; Niknejad, Ali M.; Javey, Ali (2012-02-09). "Extremely
Bendable, High-Performance Integrated Circuits Using Semiconducting Carbon Nanotube Networks for Digital, Analog, and Radio-Frequency Applications".
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Lau, Pak Heng; Takei, Kuniharu; Wang, Chuan; Ju, Yeonkyeong; Kim, Junseok; Yu, Zhibin; Takahashi, Toshitake; Cho, Gyoujin; Javey, Ali (2013-08-02). "Fully
Printed, High Performance Carbon Nanotube Thin-Film Transistors on Flexible Substrates".
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Engel, Michael; Small, Joshua P.; Steiner, Mathias; Freitag, Marcus; Green, Alexander A.; Hersam, Mark C.; Avouris, Phaedon (2008-12-09). "Thin Film
Nanotube Transistors Based on Self-Assembled, Aligned, Semiconducting Carbon Nanotube Arrays".
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Ding, Jianfu; Li, Zhao; Lefebvre, Jacques; Cheng, Fuyong; Dubey, Girjesh; et al. (2014). "Enrichment of large-diameter semiconducting SWCNTs by polyfluorene extraction for high network density thin film transistors".
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Wang, Chuan; Zhang, Jialu; Ryu, Koungmin; Badmaev, Alexander; De Arco, Lewis Gomez; Zhou, Chongwu (2009-12-09). "Wafer-Scale
Fabrication of Separated Carbon Nanotube Thin-Film Transistors for Display Applications".
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in the current-voltage curves as well as variability in the threshold voltage are issues that remain to be solved on the way to nanotube-enabled OTFT backplanes for flexible displays.
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The process through which these technologies emerged is called
Density Gradient Ultracentrifugation (DGU). DGU has been used for some time in biological and medical applications but
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Application of
Density Gradient Ultracentrifugation Using Zonal Rotors in the Large-Scale Purification of Biomolecules, Downstream Processing of Proteins, Volume 9: 6, Jan. 2000
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Green, Alexander A.; Hersam, Mark C. (2008). "Colored
Semitransparent Conductive Coatings Consisting of Monodisperse Metallic Single-Walled Carbon Nanotubes".
96:. In 2012, NanoIntegris was acquired by Raymor Industries, a large-scale producer of single-wall carbon nanotubes using the plasma torch process.
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By using high-purity, semiconducting nanotubes, scientists have been able to achieve "record...operating frequencies above 80 GHz."
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Highly purified carbon nanotubes. Carbon impurities and metal catalysts impurities below 3% and 1.5% respectively.
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Additionally, the ability to distinguish semiconducting from conducting nanotubes was found to have an effect on
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Nougaret, L.; Happy, H.; Dambrine, G.; Derycke, V.; Bourgoin, J. -P.; Green, A. A.; Hersam, M. C. (2009-06-15).
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744:"80 GHz field-effect transistors produced using high purity semiconducting single-walled carbon nanotubes"
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Both Wang and Engel have found that NanoIntegris separated nanotubes "hold great potential for
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227:(OLEDs) can be made on a larger scale and at a lower cost using separated carbon nanotubes.
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The proprietary technology through which NanoIntegris creates its products spun out of the
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644:"All-printed and transparent single walled carbon nanotube thin film transistor devices"
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1-4+ layer graphene sheets obtained by liquid exfoliation of graphite
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specializing in the production of enriched, single-walled
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Sajed, Farzam; Rutherglen, Christopher (2013-09-30).
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503:(12). American Chemical Society (ACS): 2445–2452.
451:(12). American Chemical Society (ACS): 4285–4291.
319:(4). Royal Society of Chemistry (RSC): 2328–2339.
699:(5). American Chemical Society (ACS): 1417–1422.
599:(8). American Chemical Society (ACS): 3864–3869.
547:(3). American Chemical Society (ACS): 1527–1533.
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824:Canadian companies disestablished in 2007
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809:Technology companies established in 2007
138:sc-SWCNT in non-polar aromatic solvents
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288:Nanotechnology Now October 28th, 2008
146:Enriched Conducting carbon nanotubes
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19:NanoIntegris Technologies, Inc.
757:(24). AIP Publishing: 243505.
654:(14). AIP Publishing: 143303.
181:single-walled carbon nanotubes
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829:2012 mergers and acquisitions
819:2007 establishments in Quebec
225:Organic Light-Emitting Diodes
220:Organic Light-Emitting Diodes
159:Pure and SuperPureTubes SWCNT
253:"NanoIntegris Official Site"
385:"Purified Plasma Nanotubes"
119:utilized this process with
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804:Companies based in Quebec
814:Nanotechnology companies
362:Semiconducting Nanotubes
191:Field-Effect Transistors
751:Applied Physics Letters
648:Applied Physics Letters
105:Northwestern University
231:High Frequency Devices
208:Transparent Conductors
277:Hersam Research Group
197:thin-film transistors
101:Hersam Research Group
389:www.nanointegris.com
373:Conducting Nanotubes
133:Semiconducting SWCNT
70:www.nanointegris.com
763:2009ApPhL..94x3505N
705:2008NanoL...8.1417G
660:2013ApPhL.103n3303S
605:2013NanoL..13.3864L
553:2012NanoL..12.1527W
457:2009NanoL...9.4285W
417:PureSheets Graphene
325:2014Nanos...6.2328D
167:PureSheets/Graphene
155:microns in length.
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406:Purified Nanotubes
333:10.1039/c3nr05511f
771:10.1063/1.3155212
713:10.1021/nl080302f
669:10.1063/1.4824475
613:10.1021/nl401934a
561:10.1021/nl2043375
509:10.1021/nn800708w
465:10.1021/nl902522f
150:PlasmaTubes SWCNT
84:company based in
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255:. Archived from
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214:conductive films
142:Conducting SWCNT
121:carbon nanotubes
94:carbon nanotubes
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78:NanoIntegris
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52:Headquarters
47:January 2007
24:Company type
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175:HiPco SWCNT
799:Boisbriand
793:Categories
263:2011-02-07
239:References
202:Hysterisis
86:Boisbriand
56:Boisbriand
779:0003-6951
721:1530-6984
678:0003-6951
621:1530-6984
569:1530-6984
517:1936-0851
473:1530-6984
341:2040-3364
313:Nanoscale
729:18393537
629:23899052
577:22313389
525:19206278
497:ACS Nano
481:19902962
349:24418869
128:Products
34:Industry
759:Bibcode
701:Bibcode
656:Bibcode
601:Bibcode
549:Bibcode
453:Bibcode
321:Bibcode
111:Process
66:Website
44:Founded
28:Private
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725:PMID
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625:PMID
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337:ISSN
767:doi
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