PHOTOLUMINESCENCE OF NANOPARTICLES OF (Ga2S3)(0.95)(Eu2O3)(0.05) SOLID SOLUTIONстатья
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Дата последнего поиска статьи во внешних источниках: 19 июля 2013 г.
Аннотация:We have ground bulk samples to obtain nanoparticles of (Ga2S3)(1-x)(Eu2O3)(x) solid solutions, the sizes of which were determined using an atomic force microscope. The photoluminescence spectra of the nanoparticles were studied in the temperature interval 77-300 K. We have established the mechanisms for emission and transfer of energy from the matrix to the rare-earth ion, and we determined the Stokes shift (Delta S = 0.7 eV), the Huang-Rhys parameter (S = 16), and the optical phonon energy (h omega = 23 meV).