dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.contributor | Universidade de São Paulo (USP) | |
dc.date.accessioned | 2018-12-11T17:04:10Z | |
dc.date.available | 2018-12-11T17:04:10Z | |
dc.date.created | 2018-12-11T17:04:10Z | |
dc.date.issued | 2016-01-01 | |
dc.identifier | Journal of Alloys and Compounds, v. 688, p. 497-503. | |
dc.identifier | 0925-8388 | |
dc.identifier | http://hdl.handle.net/11449/173213 | |
dc.identifier | 10.1016/j.jallcom.2016.07.090 | |
dc.identifier | 2-s2.0-84978250358 | |
dc.identifier | 2-s2.0-84978250358.pdf | |
dc.description.abstract | Pr3+-doped CaTiO3perovskite is a promising phosphor compound with the possibility of use in several technological applications. In this paper, we report the substitution of Ca2+ions with La3+ions in order to promote Ca vacancies to further enhance photoluminescence (PL). CaTiO3:Pr,La samples were prepared by the polymeric precursor method and their short- and long-range structure and photoluminescent properties were investigated in this paper. PL measurements show a narrow emission centered at 612 nm typical of the1D2–3H4transition of Pr3+ions. As the La content increases, the intensity of this peak is increased. This enhancement of PL curves for CaTiO3:Pr,La samples is associated with disorder in the CaTiO3lattice caused by the La incorporation. This disorder as a function of the La content is shown by both X-ray absorption near edge structure (XANES) spectra at the Ti K-edge and Raman spectroscopy measurements. CaTiO3:Pr,La samples do not present PL with long term afterglow. | |
dc.language | eng | |
dc.relation | Journal of Alloys and Compounds | |
dc.relation | 1,020 | |
dc.rights | Acesso aberto | |
dc.source | Scopus | |
dc.subject | Ca vacancies | |
dc.subject | Calcium titanate | |
dc.subject | CaTiO3 | |
dc.subject | Lanthanum | |
dc.subject | Photoluminescence | |
dc.subject | Praseodymium | |
dc.subject | Raman | |
dc.subject | Red phosphor | |
dc.subject | Short term afterglow | |
dc.subject | XANES | |
dc.title | Short-range structure and photoluminescent properties of the CaTiO3:Pr,La phosphor | |
dc.type | Artículos de revistas | |