Abstract
Room-temperature EPR spectra of copper-modified α-C:H films exhibit signals due to the isolated paramagnetic copper centers and dangling carbon bonds. An analysis of variation of the EPR signal intensity depending of the annealing temperature (Ta≤300°C) and relaxation of the EPR and IR absorption signals upon annealing indicates that the annealing-induced modification of the α-C:H films involves hydrogen and oxygen impurities in the amorphous carbon matrix.
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