Abstract
The spectral characteristics of absorption and photoluminescence of synthetic composite materials based on cadmium sulfide nanoparticles and polyethylene are studied in the visible and near-IR wavelength ranges. It is shown that the quantum efficiency of a material with CdS nanoparticles about 6 nm in size in a matrix of high-pressure polyethylene is the highest. The estimation of the photoluminescence linewidth shows that the linewidth of this material is the smallest, amounting to 0.55 eV, which indicates that the structure of these nanoparticles is more perfect.
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