Effect of Doped Cadmium Sulfide Nanosized Particles on the Thermal and Optical Properties of Poly(methyl methacrylate)

Cadmium sulfide nanosized particles doped with Eu3+ ions are synthesized by colloidal synthesis in polymerizing methyl methacrylate. Highly transparent glassy CdS- and Eu3+-containing composites, which exhibit the broadband luminescence of CdS and the narrowband luminescence of Eu3+ ions, are obtained by the bulk radical polymerization of methyl methacrylate. These composites are intended for use as luminescent elements of various electronic devices, optical sensors, lenses, and prisms. The glass transition temperature and the degradation temperature of the composites are determined. The spectral regions of absorption and photoluminescence excitation are ascertained. It is shown that semiconductor modifiers affect the thermal and spectral-luminescent properties of poly(methyl methacrylate) and corresponding composites.