Accounting for scattering and reabsorption in the analysis of luminescence spectra of nanoparticles

An algorithm and a program are developed allowing the correction of experimentally measured luminescence spectra of nanocomposite materials with the aim to determine the luminescence spectra of the nanoparticles or of the local regions of the sample. The optical characteristics of CdS nanoparticles synthesised in a high-pressure polyethylene and in the orthoxylene solution are studied. It is shown that the luminescence spectra of the nanoparticles differ from those experimentally observed due to the scattering and reabsorption in the samples. In the region of wavelengths 500 — 550 nm a ghost band may arise due to the scattering and reabsorption of the luminescence in the sample near the edge of the CdS absorption band.