Electrodeposition of transparent and conducting graphene/carbon nanotube thin films

Bon, Silvia Bittolo; Valentini, Luca; Kenny, J. M.; Peponi, Laura; Verdejo, Raquel; López–Manchado, Miguel A.

doi:10.1002/pssa.201026138

Cited by 59 publications

(19 citation statements)

References 30 publications

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“…Apparently, the content of CNTs in RGO-CNTs has an obvious effect on the conductivity, and an appropriate content of CNTs is useful to obtain RGO-CNT films with high conductivity. It is different from the results reported, wherein a higher content of CNTs in G-CNTs can lead to a higher conductivity [19,29]. It implies that the contribution of CNTs is effective, but complicated.…”

Section: Electrical Properties Of the Samplescontrasting

confidence: 89%

Thermostability, Photoluminescence, and Electrical Properties of Reduced Graphene Oxide–Carbon Nanotube Hybrid Materials

Liu

Cao

et al. 2013

Crystals

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Abstract:Reduced graphene oxide-carbon nanotube (RGO-CNT) hybrid materials were prepared by a simple catalyst-free route. The thermostability, photoluminescence (PL) and electrical properties of RGO-CNTs were investigated systematically. The results revealed that compared to RGO, RGO-CNTs showed multicolor PL, and higher thermostability and conductivity. The RGO-CNTs therefore have important potential applications in the fields of photonic and electrical devices.

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Section: Electrical Properties Of the Samplescontrasting

confidence: 89%

Thermostability, Photoluminescence, and Electrical Properties of Reduced Graphene Oxide–Carbon Nanotube Hybrid Materials

Liu

Cao

et al. 2013

Crystals

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“…[20], compared to the films prepared by vacuum filtration, whilst others report a similar morphology for the two techniques [9]. On the other hand, EPD deposits were found to be more uniform than rGO films made by drop-casting [87], which consisted of large clusters possibly due to Maragoni effects during drying, or by an AC discharge method [98].…”

Section: Epd Vs Other Methodsmentioning

confidence: 85%

“…In one example, rGO powder was directly dispersed in anhydrous 1-ethyl-2-pyrrolidinone and, after 1 h of sonication, the suspension obtained was seen to remain stable for more than one month. However, upon EPD, the resultant film again appears to be multi-layered rGO [87].…”

Section: Organic Suspensions Of Grm For Epdmentioning

confidence: 99%

Electrophoretic deposition of graphene-related materials: A review of the fundamentals

Diba

Fam

Boccaccını

et al. 2016

Progress in Materials Science

229

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The Electrophoretic Deposition (EPD) of graphene-related materials (GRM) is an attractive strategy for a wide range of applications. This review paper provides an overview of the fundamentals and specific technical aspects of this approach, highlighting its advantages and limitations. Since obtaining a stable dispersion of charged particles is a pre-requisite for successful EPD, the strategies for suspending GRM in different media are discussed, along with the resulting influence on the deposited film. Most importantly, the kinetics involved in the EPD of GRMs and the factors that cause deviation from linearity in Hamaker's Law are reviewed. Side reactions often influence both efficiency and the nature of the deposited material; examples include the reduction of graphene oxide (GO) and related materials, as well as the decomposition of the suspension medium at high potentials. The microstructural characteristics of GRM deposits, and their degree of reduction, strongly influence their performance in their intended function. These factors will also determine, to a large extent, the commercial potential of this technique for applications involving GRM, and are therefore discussed here.

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“…9 The latter approach has proven particularly successful and the thin film performance (as measured by the ratio of conductance and absorbance) approaches the projected ultimate limit for SWCNT transparent electrodes. 8,17 In the same spirit graphene and nanotubes have been combined into hybrid thin films, [18][19][20][21][22][23][24][25][26][27] although with performance not higher than that has been separately reported for pristine SWCNTs. 4,5,7,28 In this article, we present a detailed study of charge transport in SWCNT networks on a dielectric surface and on graphene; a division that has not been previously addressed in required detail.…”

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confidence: 99%

Enhanced Tunneling in a Hybrid of Single-Walled Carbon Nanotubes and Graphene

et al. 2019

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Transparent and conductive films (TCFs) are of great technological importance.The high transmittance, electrical conductivity and mechanical strength make singlewalled carbon nanotubes (SWCNTs) a good candidate for their raw material. Despite the ballistic transport in individual SWCNTs, however, the electrical conductivity of their networks is limited by low efficiency of charge tunneling between the tube elements. Here, we demonstrate that the nanotube network sheet resistance at high optical transmittance is decreased by more than 50% when fabricated on graphene and thus provides a comparable improvement as widely adopted gold chloride (AuCl 3 ) 1 arXiv:1903.06449v1 [physics.app-ph] 15 Mar 2019 doping. However, while Raman spectroscopy reveals substantial changes in spectral features of doped nanotubes, no similar effect is observed in presence of graphene.Instead, temperature dependent transport measurements indicate that graphene substrate reduces the tunneling barrier heights while its parallel conductivity contribution is almost negligible. Finally, we show that combining the graphene substrate and AuCl 3 doping, the SWCNT thin films can exhibit sheet resistance as low as 36 Ω/ at 90% transmittance.The electrical transport in networks of single-walled carbon nanotubes (SWCNTs) vary in a wide range of values as the structure of tubes and the morphology of networks differ.Since the modest conductivity reported in the seminal demonstrations, 1,2 the performance has gradually improved through morphological optimization 3-9 and progress in non-covalent doping. 5,10-12 Meanwhile, as confirmed by numerous direct measurements, 13-15 the limiting

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Electrodeposition of transparent and conducting graphene/carbon nanotube thin films

Cited by 59 publications

References 30 publications

Thermostability, Photoluminescence, and Electrical Properties of Reduced Graphene Oxide–Carbon Nanotube Hybrid Materials

Thermostability, Photoluminescence, and Electrical Properties of Reduced Graphene Oxide–Carbon Nanotube Hybrid Materials

Electrophoretic deposition of graphene-related materials: A review of the fundamentals

Enhanced Tunneling in a Hybrid of Single-Walled Carbon Nanotubes and Graphene

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