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Optical properties of Cu- doped Ag2S colloidal nanoparticles solution

Nasser K. Hejazy

In this work we report new optical properties of the Cu- doped Ag₂S colloidal solution. Cu -doped Ag₂S nanoparticles were prepared using a wet chemical method. The influence of doping on the optical properties of Cu-doped nanoparticles was investigated. The TEM images showed the shape of samples is spherical of average particle size of about 6–18 nm for all pure and doped Ag₂S nanoparticles. The absorption spectra of the doped samples are red shifted as compared with of the pure Ag₂S samples. The Pl intensity of the Cu-doped Ag₂S nanoparticles decreased as Cu concentration was increased. The particle sizes as calculated from the absorption spectra were in agreement with the results obtained from TEM.