Transparent, Conductive, and Flexible Carbon Nanotube Films and Their Application in Organic Light-Emitting Diodes

Zhang, Daihua; Ryu, Koungmin; Liu, Xiaolei; Polikarpov, Evgueni; Ly, James; Tompson, Mark; Zhou, Chongwu

doi:10.1021/nl0608543

Cited by 1,002 publications

(794 citation statements)

References 18 publications

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“…Fabrication of inkjet-printed SWNT supercapacitors began with the functionalization of carbon nanotubes [28]. Arc discharge nanotubes (P3 nanotubes from Carbon Solutions Inc.) were mixed with 1 wt.% aqueous sodium dodecyl sulfate (SDS) in deionized water to make a highly dense SWNT suspension with a typical concentration of 0.2 mg/mL.…”

Section: Methodsmentioning

confidence: 99%

Inkjet printing of single-walled carbon nanotube/RuO2 nanowire supercapacitors on cloth fabrics and flexible substrates

et al. 2010

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Single-walled carbon nanotube (SWNT) thin film electrodes have been printed on flexible substrates and cloth fabrics by using SWNT inks and an off-the-shelf inkjet printer, with features of controlled pattern geometry (0.4-6 cm 2 ), location, controllable thickness (20-200 nm), and tunable electrical conductivity. The as-printed SWNT films were then sandwiched together with a piece of printable polymer electrolyte to form flexible and wearable supercapacitors, which displayed good capacitive behavior even after 1,000 charge/discharge cycles. Furthermore, a simple and efficient route to produce ruthenium oxide (RuO 2 ) nanowire/SWNT hybrid films has been developed, and it was found that the knee frequency of the hybrid thin film electrodes can reach 1,500 Hz, which is much higher than the knee frequency of the bare SWNT electrodes (~158 Hz). In addition, with the integration of RuO 2 nanowires, the performance of the printed SWNT supercapacitor was significantly improved in terms of its specific capacitance of 138 F/g, power density of 96 kW/kg, and energy density of 18.8 Wh/kg. The results indicate the potential of printable energy storage devices and their significant promise for application in wearable energy storage devices.

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Section: Methodsmentioning

confidence: 99%

Inkjet printing of single-walled carbon nanotube/RuO2 nanowire supercapacitors on cloth fabrics and flexible substrates

et al. 2010

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“…Recently, highly conducting transparent SWNT films (tSWNTs) have also been fabricated by a kind of controlled filtration-deposition process, 9 which could be used as transparent electrodes for GaN/InGaN or flexible organic lightemitting diodes. 10,11 However, almost all of the above reports focused on the post-treated SWNT films, which are obtained through solution-based filtration processes. As known, to obtain high conductivity, SWNTs must be well purified and dispersed from sootlike morphology, which usually costs several days and leaves unrecyclable chemical residues.…”

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confidence: 99%

Directly Synthesized Strong, Highly Conducting, Transparent Single-Walled Carbon Nanotube Films

et al. 2007

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We report the direct synthesis of strong, highly conducting, and transparent single-walled carbon nanotube (SWNT) films. Systematically, tests reveal that the directly synthesized films have superior electrical and mechanical properties compared with the films made from a solution-based filtration process: the electrical conductivity is over 2000 S/cm and the strength can reach 360 MPa. These values are both enhanced by more than 1 order. We attribute these intriguing properties to the good and long interbundle connections. Moreover, by the help of an extrapolated Weibull theory, we verify the feasibility of reducing the interbundle slip by utilizing the long-range intertube friction and estimate the ultimate strength of macroscale SWNTs without binding agent.Because of their optical transparency and unique electric properties together with mechanical flexibility, film-like single-walled carbon nanotubes (SWNTs) are attractive not only for fundamental researches but also potential applications. For example, large optical nonlinearity, 1 subpicosecond optical response 2,3 and bolometric infrared photoresponse 4 have been observed in SWNT films, and the feasibilities of using SWNT films or networks as sensors, 5,6 diodes, 7 and field effect transistors 8 have already been demonstrated. Recently, highly conducting transparent SWNT films (tSWNTs) have also been fabricated by a kind of controlled filtration-deposition process, 9 which could be used as transparent electrodes for GaN/InGaN or flexible organic lightemitting diodes. 10,11 However, almost all of the above reports focused on the post-treated SWNT films, which are obtained through solution-based filtration processes. As known, to obtain high conductivity, SWNTs must be well purified and dispersed from sootlike morphology, which usually costs several days and leaves unrecyclable chemical residues. Besides, the comparative low strength of these films is one of the challenges for their applications, especially in the field of high-strength enforcement sheets.Here we report the direct synthesis of strong, highly conducting, and transparent films through a further developed floating catalyst CVD (FCCVD) technique that is based on the methods of producing large-scale nonwoven SWNTs. 12 As catalyst source, ferrocene/sulfur powder is heated to 65-85°C and flowed into a reaction zone by the mixture of 1000 sccm argon and 1-8 sccm methane. The growth rates of the films are mainly determined by the sublimation rate of the catalysts. Under typical conditions, after 30 min growth, thin films with a thickness of 100 nm will form in the high-temperature zone (over 600°C) of the quartz tube and can be easily peeled off. This type of large-area freestanding film can be easily handled for further researches. Raman scattering and HRTEM images show that most CNTs in the films are single-walled carbon nanotubes. In this paper, we systematically investigated the properties of the directly

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“…Considerable and continual efforts to utilise this sustainable energy supply has been a global focus for the last few decades [2][3][4]. This includes development of modified energy storage and conversion devices such as batteries [5], super capacitors [6], light emitting diodes (LEDs) [7], and solar cells [2,3,8].…”

Section: Introductionmentioning

confidence: 99%

Low temperature synthesis of multiwalled carbon nanotubes and incorporation into an organic solar cell

Mugadza

Nyamori

Mola

et al. 2017

Journal of Experimental Nanoscience

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Metal nanoparticle (MNP) catalysts used for the synthesis of multiwalled carbon nanotubes (MWCNTs) consisted of single metals (Fe, Ni or Co) and bimetallic mixture (CoFe, NiFe or NiCo). MWCNTs were successfully synthesised at 200 C in 10 min using liquefied petroleum gas as carbon source with non-equilibrium plasma enhanced chemical vapour deposition (PECVD) method. The nanostructures and the morphology of the MNPs and the MWCNTs film were characterised using relevant microscopic and spectroscopic methods. The synthesised MWCNTs were used as part of the electrode material in organic solar cell (OSC) set-up. Poly (3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT: PSS) was used as an electron transporter and poly-3-hexyl thiophene (P3HT) as an electron donor. The performance of OSC devices was tested using standard electrical measurements and solar simulator operating at 100 mW/cm 2 . The measured power conversion efficiencies was found to be dependent on the metal catalyst used during synthesis. Among all the catalysts employed in this investigation, the best device performance was found from the synthesis of MWCNTs using Fe as a catalyst followed by Co and then Ni, respectively.

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Transparent, Conductive, and Flexible Carbon Nanotube Films and Their Application in Organic Light-Emitting Diodes

Cited by 1,002 publications

References 18 publications

Inkjet printing of single-walled carbon nanotube/RuO2 nanowire supercapacitors on cloth fabrics and flexible substrates

Inkjet printing of single-walled carbon nanotube/RuO2 nanowire supercapacitors on cloth fabrics and flexible substrates

Directly Synthesized Strong, Highly Conducting, Transparent Single-Walled Carbon Nanotube Films

Low temperature synthesis of multiwalled carbon nanotubes and incorporation into an organic solar cell

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