Fullerene formation during production of chemical vapor deposited diamond

Chow, Lee; Wang, Hao; Kleckley, Stephen; Daly, Terry; Buseck, Peter R.

doi:10.1063/1.114046

Cited by 30 publications

(8 citation statements)

References 12 publications

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“…Literature also exists describing the creation of fullerenes in soot by hot-® lament chemical vapour deposition (CVD) techniques during diamond production, although in contrast to our work the substrate temperature was reported to be at least 850 ë C, with the precursor gases including a large fraction of hydrogen (Chow et al 1995). Interestingly, another detailed study has concluded that rf-PECVD is not a suitable method for producing C 60 thin ® lms ( Rocabois et al 1996).…”

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confidence: 65%

Fullerene-like carbon nanoparticles generated by radiofrequency plasma-enhanced chemical vapour deposition

Burden¹,

Silva²

1998

Philosophical Magazine Letters

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Section: Please Scroll Down For Articlecontrasting

confidence: 65%

Fullerene-like carbon nanoparticles generated by radiofrequency plasma-enhanced chemical vapour deposition

Burden¹,

Silva²

1998

Philosophical Magazine Letters

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“…Nanotubes can be converted to a diamond-like super-hard material only under high temperature and high-pressure treatment. 8 We also note that vigorous sonication in CH 2 Cl 2 can damage the sides of MWCNTs and the extent of structural deformation is solventdependent. 9 In the presence of strong electric fields, carbon nanotubes decay by unraveling monatomic carbon "wires" from the exposed end.…”

Section: Introductionmentioning

confidence: 99%

Oxidation, Deformation, and Destruction of Carbon Nanotubes in Aqueous Ceric Sulfate

et al. 2005

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A simple wet chemical method involving only ultrasonic processing in dilute ceric sulfate (CS) was used to functionalize carbon nanotubes (CNTs). Unexpectedly, single-walled and multiwalled carbon nanotubes (SWCNTs and MWCNTs) were cut, oxidized, and disintegrated by sonication in 0.1 N CS for 2-5 h. Transmission electron microscopy (TEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction spectroscopy (XRD), Raman scattering, and photoacoustic Fourier transform infrared spectroscopy (FTIR) were used to probe wall damage during the chemical processing. Cyclic voltammetry and impedance spectroscopy were used to evaluate the conductivity of the CS-treated CNTs. This one-step process resulted in the destruction of SWCNTs to produce nonconducting amorphous carbon. MWCNTs were oxidized and converted to graphitic materials and amorphous carbon with retained conductivity.

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“…Specifically, the past decade has seen developments in the performance optimization of thin films by altering the deposition parameters. This has allowed for improved film characteristics without additional cost and spurred research into the growth and optimization of organic semiconductors [3][4][5][6]. Further, CVD and CBD have facilitated efficient device manufacturing by enabling systematic film layer depositions.…”

Section: Introductionmentioning

confidence: 99%

Efficient Optimization of the Optoelectronic Performance in Chemically Deposited Thin Films

Slonopas¹,

Dhar²,

Ryan³

et al. 2017

Thin Film Processes - Artifacts on Surface Phenomena and Technological Facets

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Chemical deposition methodology is a well-understood and highly documented category of deposition techniques. In recent years, chemical bath deposition (CBD) and chemical vapor deposition (CVD) have garnered considerable attention as an effective alternative to other deposition methods. The applicability of CVD and CBD for industrial-sized operations is perhaps the most attractive aspect, in that thin-film deposition costs inversely scale with the processing batch size without loss of desirable optoelectronic properties in the materials. A downside of the method is that the optoelectronic characteristics of these films are highly susceptible to spurious deposition growth mechanisms. For example, increasing the temperature of the chemical deposition bath can shift the deposition mechanisms from ion-by-ion (two dimensional) precipitation to bulk solution cluster-by-cluster (three dimensional) formation which then deposit. This drastically changes the structural, optical, and electrical characteristics of CBD-deposited thin films.A similar phenomenon is observed in CVD deposited materials. Thus, it is of great interest to study the coupling between the deposition parameters and subsequent effects on film performance. Such studies have been conducted to elucidate the correlation between growth mechanisms and film performance. Here, we present a review of the current literature demonstrating that simple changes can be made in processing conditions to optimize the characteristics of these films for optoelectronic applications.

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Fullerene formation during production of chemical vapor deposited diamond

Abstract: Large-scale and low-cost synthesis of single-walled carbon nanotubes by the catalytic pyrolysis of hydrocarbons

Cited by 30 publications

References 12 publications

Fullerene-like carbon nanoparticles generated by radiofrequency plasma-enhanced chemical vapour deposition

Fullerene-like carbon nanoparticles generated by radiofrequency plasma-enhanced chemical vapour deposition

Oxidation, Deformation, and Destruction of Carbon Nanotubes in Aqueous Ceric Sulfate

Efficient Optimization of the Optoelectronic Performance in Chemically Deposited Thin Films

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