C. Demartino et al., DETERMINATION OF THE SP(3) SP(2) RATIO IN A-C-H FILMS BY INFRARED SPECTROMETRY ANALYSIS/, DIAMOND AND RELATED MATERIALS, 4(10), 1995, pp. 1210-1215
In this paper, a method for the determination of the sp(3)/sp(2) ratio
for carbon atoms in a-C:H films is presented. First, the infrared ana
lysis of the films is performed and the sp(3)/sp(2) ratio for the hydr
ogenated carbon atoms is determined. From this value, and making diffe
rent assumptions for the different types of a-C:H (graphite-, diamond-
or polymer-like), the overall sp(3)/sp(2) ratio is determined. The re
sults obtained are in good agreement with NMR data for the types of a-
C:H considered.