On correlation between the shape of Raman spectra and short-range order structure of hydrogen-free amorphous carbon films
1997; Elsevier BV; Volume: 6; Issue: 8 Linguagem: Inglês
10.1016/s0925-9635(96)00771-6
ISSN1879-0062
AutoresAndrei Stanishevsky, Leonid Khriachtchev, Reijo Lappalainen, Markku Räsänen,
Tópico(s)Carbon Nanotubes in Composites
ResumoHydrogen-free, hard carbon films prepared by a pulsed cathodic arc discharge method under different deposition conditions were investigated using Raman spectroscopy. The influence of a number of deposition parameters (discharge voltage, temperature and orientation of the substrate, admixtures, etc.) on the shape of the Raman spectra is considered. The maximum of the Raman intensity ratio R=I500I1550 and the minimum of the slope S=(I1300–I1100)I1100 are demonstrated to correspond to the highest diamond-like properties of the films. The numerical correlation of R and S with the sp3sp2 ratio is established. The presented results show that the spectral parameters R and S are suitable for quantitatively characterizing films with an sp3sp2 ratio larger than 0.3.
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