Morphology and doping concentration effect on the luminescence properties of SnO2:Eu3+ nanoparticles

I.E. Kolesnikov, D.S. Kolokolov, M.A. Kurochkin, M.A. Voznesenskiy, M.G. Osmolowsky, E. Lähderanta, O.M. Osmolovskaya

Результат исследований: Научные публикации в периодических изданияхстатья

5 Цитирования (Scopus)

Аннотация

Morphology and Eu3+ doping effect on structural and photoluminescence properties of tin dioxide nanoparticles obtained by co-precipitation and hydrothermal methods are reported and analyzed for the first time. The samples were characterized by means of transmission electron microscopy (TEM), powder X-ray diffraction (XRD), specific surface area (SSA) estimation. TEM, XRD and SSA analyses showed that in the case of co-precipitation method the nanoparticles were spherical. Hydrothermal treatment leads to formation of cubic nanoparticles. An average particle size increased from 3 to 5 nm and from 6 to 11 nm along with increase of Eu3+ concentration for spherical and cubic nanoparticles, respectively. Steady-state and kinetics photoluminescence properties of nanophophors with different morphology were studied and compared. Radiative and nonradiative decay rates and Judd-Ofelt parameters were calculated using the model of 4f–4f intensity theory. It was shown, that preferred positions of substitution in SnO2 host differ depending on Eu3+ doping concentration and particle morphology.
Язык оригиналаанглийский
Номер статьи153640
ЖурналJournal of Alloys and Compounds
Том822
Ранняя дата в режиме онлайн2 янв 2020
СостояниеОпубликовано - мая 2020

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