Journal ArticleDOI
Characterization of diamond films by Raman spectroscopy
Diane S. Knight,William B. White +1 more
TLDR
The Raman spectrum of hexagonal diamond (lonsdaleite) is distinct from that of the cubic diamond and allows it to be recognized as discussed by the authors, and the Raman line width varies with mode of preparation of the diamond and has been related to degree of structural order.Abstract:
As the technology for diamond film preparation by plasma-assisted CVD and related procedures has advanced, Raman spectroscopy has emerged as one of the principal characterization tools for diamond materials. Cubic diamond has a single Raman-active first order phonon mode at the center of the Brillouin zone. The presence of sharp Raman lines allows cubic diamond to be recognized against a background of graphitic carbon and also to characterize the graphitic carbon. Small shifts in the band wavenumber have been related to the stress state of deposited films. The effect is most noticeable in diamond films deposited on hard substrates such as alumina or carbides. The Raman line width varies with mode of preparation of the diamond and has been related to degree of structural order. The Raman spectrum of hexagonal diamond (lonsdaleite) is distinct from that of the cubic diamond and allows it to be recognized.read more
Citations
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Journal ArticleDOI
Raman spectroscopy of graphene and graphite: Disorder, electron phonon coupling, doping and nonadiabatic effects
TL;DR: In this article, the authors focus on the origin of the D and G peaks and the second order of D peak and show that the G and 2 D Raman peaks change in shape, position and relative intensity with number of graphene layers.
Journal ArticleDOI
Raman spectroscopy as a versatile tool for studying the properties of graphene
Andrea C. Ferrari,Denis M. Basko +1 more
TL;DR: The state of the art, future directions and open questions in Raman spectroscopy of graphene are reviewed, and essential physical processes whose importance has only recently been recognized are described.
Journal ArticleDOI
High-yield production of graphene by liquid-phase exfoliation of graphite
Yenny Hernandez,Valeria Nicolosi,Mustafa Lotya,Fiona M. Blighe,Zhenyu Sun,Sukanta De,I.T. McGovern,Brendan Holland,Michele T. Byrne,Yurii K. Gun'ko,John J. Boland,Peter Niraj,Georg S. Duesberg,Satheesh Krishnamurthy,Robbie Goodhue,John L. Hutchison,Vittorio Scardaci,Andrea C. Ferrari,Jonathan N. Coleman +18 more
TL;DR: Graphene dispersions with concentrations up to approximately 0.01 mg ml(-1), produced by dispersion and exfoliation of graphite in organic solvents such as N-methyl-pyrrolidone are demonstrated.
Journal ArticleDOI
Raman spectroscopy of carbon nanotubes
TL;DR: The use of Raman spectroscopy to reveal the remarkable structure and the unusual electronic and phonon properties of single wall carbon nanotubes (SWNTs) is reviewed comprehensively in this article.
Journal ArticleDOI
Studying Disorder in Graphite-Based Systems by Raman Spectroscopy
Marcos A. Pimenta,G. Dresselhaus,Mildred S. Dresselhaus,Luiz Gustavo Cançado,Ado Jorio,Riichiro Saito +5 more
TL;DR: In this review, experimental results for the D, D' and G' bands obtained with different laser lines, and in samples with different crystallite sizes and different types of defects are presented and discussed.
References
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Journal ArticleDOI
Raman Spectrum of Graphite
F. Tuinstra,J. L. Koenig +1 more
TL;DR: Raman spectra are reported from single crystals of graphite and other graphite materials as mentioned in this paper, and the Raman intensity of this band is inversely proportional to the crystallite size and is caused by a breakdown of the k-selection rule.
Journal ArticleDOI
First- and second-order Raman scattering from finite-size crystals of graphite
TL;DR: In this article, the second-order Raman spectrum of pyrolytic graphite has been studied and the dependence of the first-order graphite Raman spectra on crystallite size has been shown.
Journal ArticleDOI
Use of Raman scattering to investigate disorder and crystallite formation in as-deposited and annealed carbon films
TL;DR: In this article, the Raman spectra of carbon films were analyzed via a best fit to computer-generated line shapes, used to simulate the $D$ and $G$ lines.
Journal ArticleDOI
Raman Spectrum of Diamond
Stuart A. Solin,A. K. Ramdas +1 more
TL;DR: In this paper, the first and second-order Raman spectra of diamond were studied using the 4880 and 5145 lines of an Ar ion laser and the 6328 \AA{} line of a He-Ne laser.
Journal ArticleDOI
Modeling studies of amorphous carbon
TL;DR: In this paper, three structural models of amorphous carbon with differing percentages of threefold and fourfold-coordinated atoms were constructed and analyzed, along with a purely fourcoordinated amorphus Ge model which was scaled to diamond bond lengths.
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