Effect of neodymium (III) ions of the photoluminescence of cadmium and zinc sulfides in a polyacryate matrix

Nanoscale particles CdS : Nd$^{3+}$, ZnS : Nd$^{3+}$ and (Cd,Zn)S : Nd$^{3+}$ were synthesized and doped in a polymerizing methyl methacrylate medium during the production of optically transparent polyacrylate composites of the composition PMMA/CdS : Nd$^{3+}$, PMMA/ZnS : Nd$^{3+}$ and PMMA/(Cd,Zn)S : Nd$^{3+}$. The excitation of photoluminescence and photoluminescence of semiconductor structures in a polyacrylate matrix is associated with the transition of electrons from the valence band to the conduction band and to the levels of structural defects of particles, followed by recombination at these levels. Based on changes in the excitation spectra of photoluminescence and photoluminescence composites, assumptions are made about the structure of particles, the distribution of Nd$^{3+}$ ions in it and their effect on photoluminescence.