Study of Optical Properties of Metallic Sulphide Dispersions

The work is devoted to optical properties study of water dispersion and cadmium and zinc sulphide films, obtained by chemical deposition in the concentration range below the threshold. On the basis of the spectra absorption the forbidden-band width has been determined, and the calculations of the particle sizes of the synthesized samples have been made. The desposition of optical absorption band edge to a shorter short-wave region with decreasing particle sizes has been defined. The possibility of particle sizes control by varying the concentration of initial salt solutions has been demonstrated.