High performance all-carbon composite transparent electrodes containing uniform carbon nanotube networks

Yun, Hyung Duk; Kwak, Jinsung; Kim, Se‐Yang; Seo, Heewon; Bang, In Cheol; Kim, Sung Youb; Kang, Seoktae; Kwon, Soon‐Yong

doi:10.1016/j.jallcom.2016.03.102

Cited by 9 publications

(7 citation statements)

References 54 publications

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“…Hybridization of graphene with other conducting materials such as metallic nanostructures, polymers, and grids allows the reduction of the structural defects of graphene without losing its high transparency [89]. In a general manner the use of polymers to produce carbon-based composites contributes to cost reduction.…”

Section: Carbonmentioning

confidence: 99%

“…Experimental results showed CNT electrodes could satisfy the requirements necessary for touch screen panels such as a sheet resistance 100 Ω/sq and visible transmittance higher than 80% and a neutral color (i.e., yellow approaching to zero). Yun et al [89] reported on a highly efficient and bending durable all-carbon composite that employs uniform CNT networks on a monolayer graphene/polyethylene. Graphene was synthesized using a conventional CVD process.…”

Section: Carbonmentioning

confidence: 99%

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Transparent Electrodes: A Review of the Use of Carbon-Based Nanomaterials

L¹,

pez-Naranjo²,

Gonz

et al. 2016

Journal of Nanomaterials

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Transparent conducting electrodes (TCE) are extensively applied in a great range of optoelectronic and photovoltaic equipment (e.g., solar cells, touch panels, and flexible devices). Carbon-based nanomaterials are considered as suitable replacements to substitute traditional materials to manufacture TCE due to their remarkable characteristics, for example, high optical transmittance and outstanding electrical properties. In comparison with traditional indium tin oxide electrodes, carbon-based electrodes show good mechanical properties, chemical stability, and low cost. Nevertheless, major issues related to the development of good quality manufacture methods to produce carbon-based nanomaterials have to be overcome to meet massive market requirements. Hence, the development of alternative TCE materials as well as appropriate large production techniques that meet the requirements of a proper sheet resistance along with a high optical transparency is a priority. Therefore, in this work, we summarize and discuss novel production and synthesis methods, chemical treatments, and hybrid materials developed to satisfy the worldwide request for carbon-based nanomaterials.

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Section: Carbonmentioning

confidence: 99%

Section: Carbonmentioning

confidence: 99%

Transparent Electrodes: A Review of the Use of Carbon-Based Nanomaterials

L¹,

pez-Naranjo²,

Gonz

et al. 2016

Journal of Nanomaterials

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“…Specifically, as our Monte Carlo simulations show, 71 such self-assembled networks used as directing agents for carbon nanotubes have the potential to achieve extremely low values of the percolation thresholds. This makes them highly desirable in such applications as polymer com-posites 72,73 and transparent electrodes, 74 for which CNTs still have not met initial expectations, 75,76 even when other directing agents, such as worm-like micelles were used. 6…”

Section: Resultsmentioning

confidence: 99%

Self-assembly of bis-salphen compounds: from semiflexible chains to webs of nanorings

et al. 2018

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The recently-observed self-assembly of certain salphen-based compounds into neuron-like networks of microrings interconnected with nano-thin strings may suggest a new highly-potent tool for nanoscale patterning. However, the mechanism behind such phenomena needs to be clarified before they can be applied in materials design. Here we show that, in contrast with what was initially presumed, the emergence of a "rings-and-rods" pattern is unlikely to be explained by merging, collapse and piercing of vesicles as in previously reported cases of nanorings self-assembly via non-bonding interactions. We propose an alternative explanation: the compounds under study form a 1D coordination polymer, the fibres of which are elastic enough to fold into toroidal globules upon solvent evaporation, while being able to link separate chains into extended networks. This becomes possible because the structure of the compound's scaffold is found to adopt a very different conformation from that inferred in the original work. Based on ab initio and molecular dynamics calculations we propose a step-by-step description of self-assembly process of a supramolecular structure which explains all the observed phenomena in a simple and clear way. The individual roles of the compound' s scaffold structure, coordination centres, functional groups and solvent effects are also explained, opening a route to control the morphology of self-assembled networks and to synthesize new compounds exhibiting similar behaviour.

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“…Graphene used for our device was grown on a polycrystalline Cu foil using a chemical vapor deposition method demonstrated elsewhere [25]. A 25 μm copper foil (Alfa Aesar, 99.8% purity) was electropolished in phosphoric acid for 15 min and rinsed with distilled water and isopropyl alcohol (IPA).…”

Section: Experimental Methodsmentioning

confidence: 99%

Gate-dependent spin Hall induced nonlocal resistance and the symmetry of spin-orbit scattering in Au-clustered graphene

et al. 2017

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Engineering the electron dispersion of graphene to be spin-dependent is crucial for the realization of spin-based logic devices. Enhancing spin-orbit coupling in graphene can induce spin Hall effect, which can be adapted to generate or detect a spin current without a ferromagnet. Recently, both chemically and physically decorated graphenes have shown to exhibit large nonlocal resistance via the spin Hall and its inverse effects. However, these nonlocal transport results have raised critical debates due to the absence of field dependent Hanle curve in subsequent studies. Here, we introduce Au clusters on graphene to enhance spin-orbit coupling and employ a nonlocal geometry to study the spin Hall induced nonlocal resistance. Our results show that the nonlocal resistance highly depends on the applied gate voltage due to various current channels. However, the spin Hall induced nonlocal resistance becomes dominant at a particular carrier concentration, which is further confirmed through Hanle curves. The obtained spin Hall angle is as high as ∼0.09 at 2 K. Temperature dependence of spin relaxation time is governed by the symmetry of spin-orbit coupling, which also depends on the gate voltage: asymmetric near the charge neutral point and symmetric at high carrier concentration. These results inspire an effective method for generating spin currents in graphene and provide important insights for the spin Hall effect as well as the symmetry of spin scattering in physically decorated graphene.

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High performance all-carbon composite transparent electrodes containing uniform carbon nanotube networks

Cited by 9 publications

References 54 publications

Transparent Electrodes: A Review of the Use of Carbon-Based Nanomaterials

Transparent Electrodes: A Review of the Use of Carbon-Based Nanomaterials

Self-assembly of bis-salphen compounds: from semiflexible chains to webs of nanorings

Gate-dependent spin Hall induced nonlocal resistance and the symmetry of spin-orbit scattering in Au-clustered graphene

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