Аннотация:Composite a-C:Ag structures (silver nanoclusters embedded into amorphous carbon matrix) synthesized by ion-assisted pulse-plasma deposition were studied. Ion assistance current and energy variation effect on carbon matrix structure and silver nanocrystallites size and shape were discussed. We showed that UV-vis spectra alteration was caused by structural modifications which led to surface plasmon-related peak and π-π* transition maximum emergence.