Journal ArticleDOI
Control of diamond film microstructure by Ar additions to CH4/H2 microwave plasmas
TLDR
The transition from microcrystalline to nanocrystalline diamond films grown from Ar/H2/CH4 microwave plasmas has been investigated in this article, showing that the surface morphology, the grain size, and the growth mechanism of the diamond films depend strongly on the ratio of Ar to H2 in the reactant gases.Abstract:
The transition from microcrystalline to nanocrystalline diamond films grown from Ar/H2/CH4 microwave plasmas has been investigated. Both the cross-section and plan-view micrographs of scanning electron microscopy reveal that the surface morphology, the grain size, and the growth mechanism of the diamond films depend strongly on the ratio of Ar to H2 in the reactant gases. Microcrystalline grain size and columnar growth have been observed from films produced from Ar/H2/CH4 microwave discharges with low concentrations of Ar in the reactant gases. By contrast, the films grown from Ar/H2/CH4 microwave plasmas with a high concentration of Ar in the reactant gases consist of phase pure nanocrystalline diamond, which has been characterized by transmission electron microscopy, selected area electron diffraction, and electron energy loss spectroscopy. X-ray diffraction and Raman spectroscopy reveal that the width of the diffraction peaks and the Raman bands of the as-grown films depends on the ratio of Ar to H2 in...read more
Citations
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Journal ArticleDOI
Nanocrystalline diamond films1
TL;DR: In this paper, the synthesis of nanocrystalline diamond films from carbon-containing noble gas plasmas is described, which is the result of new growth and nucleation mechanisms, which involve the insertion of C2, carbon dimer, into carbon-carbon and carbon-hydrogen bonds, resulting in hetereogeneous nucleation rates on the order 1010 cm−2 s−1.
Journal ArticleDOI
Chemical vapour deposition synthetic diamond: materials, technology and applications.
R.S. Balmer,John Robert Brandon,S L Clewes,H K Dhillon,Joseph Michael Dodson,Ian Friel,Paul Nicolas Inglis,T D Madgwick,Matthew Markham,Timothy Peter Mollart,N. Perkins,Geoffrey Alan Scarsbrook,Daniel J. Twitchen,A.J. Whitehead,J J Wilman,S M Woollard +15 more
TL;DR: This paper reviews the material properties and characteristics of single crystal and polycrystalline CVD diamond, and how these can be utilized, focusing particularly on optics, electronics and electrochemistry.
Journal ArticleDOI
The mystery of the 1140 cm−1 Raman line in nanocrystalline diamond films
TL;DR: In this article, it was shown that trans-polyacetylene originates from the diamond film and the diamond mode around 1332 cm−1 does not, while the deuterium and H-D substituted hydrocarbon sources do.
Journal ArticleDOI
The CVD of Nanodiamond Materials
TL;DR: The growth and characteristics of nanocrystalline diamond thin films with thicknesses from 20nm to less than 5nm are reviewed in this paper, where it is convenient to classify these films as either ultra-nanocalstalline-diamond (UNCD) or nanocrystine-Diamond (NCD) based on their microstructure, properties, and growth environment.
Journal ArticleDOI
Conductive diamond: synthesis, properties, and electrochemical applications
Nianjun Yang,Siyu Yu,Julie V. Macpherson,Yasuaki Einaga,Hongying Zhao,Guohua Zhao,Greg M. Swain,Xin Jiang +7 more
TL;DR: This review provides an overview of the fundamental properties and highlights recent progress and achievements in the growth of boron-doped (metal-like) and nitrogen and phosphorus- doped (semi-conducting) diamond and hydrogen-terminated undoped diamond electrodes.
References
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Journal ArticleDOI
Low-Pressure, Metastable Growth of Diamond and "Diamondlike" Phases
John C. Angus,Cliff C. Hayman +1 more
TL;DR: Vapor-grown diamond and diamondlike materials may have eventual applications in abrasives, tool coatings, bearing surfaces, electronics, optics, tribological surfaces, and corrosion protection.
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Vapor growth of diamond on diamond and other surfaces
TL;DR: In this article, the growth rate of homoepitaxial diamond films reached 1 μm/h at 1000°C; film properties were identical to those of bulk crystals.
Journal ArticleDOI
Diamond synthesis from gas phase in microwave plasma
TL;DR: In this paper, a crystal diamond predominantly composed of {100} and {111} faces was grown on a non-diamond substrate from a gaseous mixture of hydrogen and methane under microwave glow discharge conditions.
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Raman scattering characterization of carbon bonding in diamond and diamondlike thin films
TL;DR: In this article, the atomic bonding configurations of carbon bonding in diamond and diamond-like thin films are explored using Raman scattering, and the general aspects of Raman scatter from composites are presented.
Journal ArticleDOI
Growth of diamond particles from methane-hydrogen gas
TL;DR: In this article, a mixture of hydrocarbon and hydrogen gases was passed through a heated reaction chamber in which a hot tungsten filament was held near the substrates, and the deposit was identified by reflection electron diffraction and Raman spectroscopy.