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Stress reduction and bond stability during thermal annealing of tetrahedral amorphous carbon

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TLDR
In this paper, a comprehensive study of the stress release and structural changes caused by postdeposition thermal annealing of tetrahedral amorphous carbon (ta-C) on Si has been carried out.
Abstract
A comprehensive study of the stress release and structural changes caused by postdeposition thermal annealing of tetrahedral amorphous carbon (ta-C) on Si has been carried out. Complete stress relief occurs at 600–700 °C and is accompanied by minimal structural modifications, as indicated by electron energy loss spectroscopy, Raman spectroscopy, and optical gap measurements. Further annealing in vacuum converts sp3 sites to sp2 with a drastic change occurring after 1100 °C. The field emitting behavior is substantially retained up to the complete stress relief, confirming that ta-C is a robust emitting material.

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Diamond-like amorphous carbon

TL;DR: In this paper, the authors describe the deposition methods, deposition mechanisms, characterisation methods, electronic structure, gap states, defects, doping, luminescence, field emission, mechanical properties and some applications of diamond-like carbon.
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Science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems

Andrea C. Ferrari, +68 more
- 04 Mar 2015 - 
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60 years of DLC coatings: Historical highlights and technical review of cathodic arc processes to synthesize various DLC types, and their evolution for industrial applications

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References
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Book

Electron Energy-Loss Spectroscopy in the Electron Microscope

TL;DR: In this article, the authors present an overview of the basic principles of energy-loss spectroscopy, including the use of the Wien filter, and the analysis of the inner-shell of the detector.
Journal ArticleDOI

Infrared and Raman spectra of polyatomic molecules

TL;DR: In this article, the authors present a series on molecular spectra and molecular structure, and a large number of tables have also been included in which theoretical results are summarized, or observed data collected, for the benefit of those carrying out research work in the field of infrared and Raman spectra or related fields.
Journal ArticleDOI

Optical Properties of Thin Solid Films

O. S. Heavens, +1 more
- 01 Mar 1956 - 
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Raman spectroscopy on amorphous carbon films

TL;DR: The origin and interpretation of the Raman features of amorphous (hydrogenated) carbonfilmsdeposited at room temperature in the region of 1000-1700 cm−1 is discussed in this paper.
Journal ArticleDOI

Electronic and atomic structure of amorphous carbon.

TL;DR: It is shown that the 1.5-eV optical gap of a-C:H is unusually small and requires that both its valence and conduction band consist of \ensuremath{\pi} states on ${\mathrm{sp}}^{2}$ sites and that these sites must also be significantly clustered, such as in graphitic clusters containing four or more rings.
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