1. Influence of La substitution on local structural and photoluminescence properties of SrTiO3:Pr phosphor.
- Author
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Deltreggia, Lucas Angelini, Bernardi, Maria Inês Basso, and Mesquita, Alexandre
- Subjects
- *
PHOSPHORS , *PHOTOLUMINESCENCE , *X-ray absorption near edge structure , *PEROVSKITE , *STRONTIUM titanate - Abstract
Abstract Pr3+-doped perovskite-based SrTiO 3 phosphors have been developed as a potential red phosphor. In this paper, we report the substitution of La3+ ions for Sr2+ ions in order to promote Sr vacancies to further enhance photoluminescence. Given that the La content increases, an enhancement in the intensity of all emissions is observed, mainly for 1D 2 –3H 4 and 3P 0 –3H 6 transitions. This enhancement of photoluminescence emissions is associated with disorder in the lattice caused by La incorporation. Raman measurements and X-ray absorption near edge structure (XANES) spectra at the Ti K-edge identify this disorder as a function of the La content. Graphical abstract Unlabelled Image [ABSTRACT FROM AUTHOR]
- Published
- 2018
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