Pereira, Sandra C.Figueiredo, Alberthmeiry T.Barrado, Cristiano M.Stoppa, Marcelo H.Dwivedi, YashashchandraLi, Maximo S.Longo, Elson [UNESP]2018-12-112018-12-112015-11-01Journal of the Brazilian Chemical Society, v. 26, n. 11, p. 2339-2345, 2015.1678-47900103-5053http://hdl.handle.net/11449/177575This article discusses a simple approach for the microwave-assisted synthesis of good quality nanosized calcium titanate crystals doped with trivalent Tm and Yb lanthanide ions. The prepared nanoparticles had a microcube-like structure and a crystallite size of ca. 47 nm. The structure of the nanocrystals was analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM), and their spectroscopic behavior was examined at a laser excitation wavelength of 350.7 nm. It was found that doping CaTiO3 nanocrystals with Yb and Tm leads to about 250-fold brighter photoluminescence (PL) emissions in the blue and near-infrared regions than that emitted by pure CaTiO3 nanocrystals. The PL emission was correlated with the structural disorder.2339-2345engDefect emissionsLanthanide elementsLuminescenceNanophosphorsSpectroscopyArtigo10.5935/0103-5053.20150229S0103-50532015001102339Acesso aberto2-s2.0-84946083323S0103-50532015001102339.pdf