Large area CVD growth of graphene

Chen, Xiangping; Zhang, Lili; Chen, Shanshan

doi:10.1016/j.synthmet.2015.07.005

Cited by 202 publications

(112 citation statements)

References 114 publications

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“…These epitaxial films can be single crystals with low defect densities. High-quality large-area films can be produced by this method [1][2][3][4][5][6][7]. Although epitaxial growth has been widely used, the rational optimization of growth conditions is rather difficult because of various factors controlling the growth process [5,7].…”

Section: Introductionmentioning

confidence: 99%

Scaling theory for two-dimensional single domain growth driven by attachment of diffusing adsorbates

Seki

2019

New J. Phys.

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Epitaxial growth methods are a key technology used in producing large-area thin films on substrates but as a result of various factors controlling growth processes the rational optimization of growth conditions is rather difficult. Mathematical modeling is one approach used in studying the effects of controlling factors on domain growth. The present study is motivated by a recently found scaling relation between the domain radius and time for chemical vapor deposition of graphene. Mathematically, we need to solve the Stefan problem; when the boundary moves, its position should be determined separately from the boundary conditions needed to obtain the spatial profile of diffusing adsorbates. We derive a closed equation for the growth rate constant defined as the domain area divided by the time duration. We obtain approximate analytical expressions for the growth rate; the growth rate constant is expressed as a function of the two-dimensional diffusion constant and the rate constant for the attachment of adsorbates to the solid domain. In experiments, the area is decreased by stopping the source gas flow. The rate of decrease of the area is obtained from theory. The theoretical results presented provide a foundation to study controlling factors for domain growth.

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Section: Introductionmentioning

confidence: 99%

Scaling theory for two-dimensional single domain growth driven by attachment of diffusing adsorbates

Seki

2019

New J. Phys.

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“…32 The rapid development of the chemical vapor deposition (CVD) technique in recent years has enabled the production of large-area, high-quality graphene films with good structural controllability, which is particularly beneficial for the fabrication of sensing devices. 33 Biosensors fabricated with graphene have been widely investigated for the detection of viruses, 34 bacteria, 35 proteins, 36 and nucleic acids. 37 In addition, SLG-based biosensors have demonstrated excellent biocompatibility, conductivity and high sensitivity.…”

Section: Introductionmentioning

confidence: 99%

An aptamer-based shear horizontal surface acoustic wave biosensor with a CVD-grown single-layered graphene film for high-sensitivity detection of a label-free endotoxin

Pang

et al. 2020

Microsyst Nanoeng

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The thickness of the sensitive layer has an important influence on the sensitivity of a shear horizontal surface acoustic wave (SH-SAW) biosensor with a delay-line structure and lower layer numbers of graphene produce better sensitivity for biological detection. Therefore, a label-free and highly sensitive SH-SAW biosensor with chemical vapor deposition (CVD-)-grown single-layered graphene (SLG) for endotoxin detection was developed in this study. With this methodology, SH-SAW biosensors were fabricated on a 36°Y-90°X quartz substrate with a base frequency of 246.2 MHz, and an effective detection cell was fabricated using acrylic material. To increase the surface hydrophilicity, chitosan was applied to the surface of the SLG film. Additionally, the aptamer was immobilized on the surface of the SLG film by cross-linking with glutaraldehyde. Finally, the sensitivity was verified by endotoxin detection with a linear detection ranging from 0 to 100 ng/mL, and the detection limit (LOD) was as low as 3.53 ng/mL. In addition, the stability of this type of SH-SAW biosensor from the air phase to the liquid phase proved to be excellent and the specificity was tested and verified by detecting the endotoxin obtained from Escherichia coli (E. coli), the endotoxin obtained from Pseudomonas aeruginosa (P. aeruginosa), and aflatoxin. Therefore, this type of SH-SAW biosensor with a CVD-grown SLG film may offer a promising approach to endotoxin detection, and it may have great potential in clinical applications.

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“…Graphene, with ao ne-atom-thick two-dimensional (2 D) layer structure, [1,2] is regarded as ap romising electrode material for supercapacitors possessing high power density and extremely long cycle life because of its larget heoretical specific surface area (SSA), strong mechanical strength, and high intrinsic electrical conductivity. [3][4][5][6][7] The preparation of graphene can be realized by various methods, such as micromechanical exfoliation of graphite, [1,[8][9][10] reduction of graphene oxide, [11,12] chemical vapor deposition (CVD), [13][14][15][16][17] or liquid-phase exfoliation. [18,19] The micromechanical exfoliation method, an extremelys imple methodf or the preparation of graphene, was the earliest known method to prepare graphene.…”

Section: Introductionmentioning

confidence: 99%

High Capacitive Energy Storage of Nest‐Like Porous Graphene Microspheres Electrode with High Mass Loading

Wang

Song

et al. 2019

ChemSusChem

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Nest‐like porous graphene microspheres (NPGMs) are grown by using a chemical vapor deposition (CVD) method in a fluidized bed reactor from methane and basic magnesium carbonate microspheres (synthesized by a stirring‐induced crystallization approach) as carbon source and template, respectively. The CVD‐derived NPGMs have a few‐layer structure and high electrical conductivity, as well as a three‐dimensional individual macroarchitecture accompanied with well‐developed pore channels and great structural integrity. As the electrode for a symmetric supercapacitor, the effect of different mass loadings for NPGMs‐based electrodes on the capacitive energy‐storage performance is investigated. Superior electrochemical properties with respect to gravimetric, areal, and total capacitances, rate capability, and durability are shown by the NPGMs‐based symmetric supercapacitors, even at mass loadings up to 10 mg cm−2. Moreover, the electrochemical behavior of the NPGMs‐based electrode is much superior to those of two‐dimensional lamella‐like graphene and commercial activated carbon.

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Large area CVD growth of graphene

Cited by 202 publications

References 114 publications

Scaling theory for two-dimensional single domain growth driven by attachment of diffusing adsorbates

Scaling theory for two-dimensional single domain growth driven by attachment of diffusing adsorbates

An aptamer-based shear horizontal surface acoustic wave biosensor with a CVD-grown single-layered graphene film for high-sensitivity detection of a label-free endotoxin

High Capacitive Energy Storage of Nest‐Like Porous Graphene Microspheres Electrode with High Mass Loading

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