ZO Lipatova, EV Kolobkova, AI Sidorov, NV Nikonorov – Optics and Spectroscopy, 2016
The influence of sodium nanoparticles and secondary heat treatment conditions on the spectralluminescent characteristics of fluorophosphate glasses with PbSe molecular clusters and quantum dots is studied. Experiments with glasses containing no sodium nanoparticles show that their thermal treatment leads to the formation of molecular clusters with subsequent formation of quantum dots having an intense luminescence. The results of numerical simulation for glasses with sodium nanoparticles shows that heat treatment leads to formation of a sodium fluoride shell on the nanoparticles surface. It is shown that quenching of the luminescence of PbSe molecular clusters and quantum dots takes place in these glasses.
… on a Perkin Elmer LS55 spectrofluorimeter. Luminescence spec- tra upon excitation at 808 nm were measured using a StellarNet fiber NIR spectrometer in the range of 900– 1800 nm. The absolute quantum yield of luminescence …
