2010
DOI: 10.1016/j.jallcom.2010.03.138
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Enhancement of luminescence and afterglow in CaTiO3:Pr3+ by Zr substitution for Ti

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Cited by 39 publications
(41 citation statements)
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“…The reasons for the enhancement of the PL intensity can be ascribe to the change of the lattice symmetry. The change of the lattice symmetry will give rise to a remarkable effect on the properties of Pr 3+ and further influence the luminescence properties [31][32][33][34], when Ca 2+ (1.34Å, 12 CN) ions are replaced by bigger radius Sr 2+ ions (1.44Å, 12 CN), the symmetry of the pseudoperovskite units was changed [33]. As previously discussed Pr 3+ ions dispersed in the pseudo-perovskite units of samples' crystal structure.…”
Section: Resultsmentioning
confidence: 81%
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“…The reasons for the enhancement of the PL intensity can be ascribe to the change of the lattice symmetry. The change of the lattice symmetry will give rise to a remarkable effect on the properties of Pr 3+ and further influence the luminescence properties [31][32][33][34], when Ca 2+ (1.34Å, 12 CN) ions are replaced by bigger radius Sr 2+ ions (1.44Å, 12 CN), the symmetry of the pseudoperovskite units was changed [33]. As previously discussed Pr 3+ ions dispersed in the pseudo-perovskite units of samples' crystal structure.…”
Section: Resultsmentioning
confidence: 81%
“…The local environments of Pr 3+ become more asymmetric. This change of lattice symmetry allows stronger 4f-4f emission to occur [33,34]. There are still other reasons which might influence the emission properties, such as crystallinity, particle size, defects.…”
Section: Resultsmentioning
confidence: 99%
“…8 [48,49]. The profile of the curves clearly indicate that two processes govern the luminescence and this is a sign that the Eu 3+ ions occupy at least two different sites of symmetry in the CT matrix (see Fig.…”
Section: +mentioning
confidence: 83%
“…Zhang et al [38] reported that the afterglow of CaTiO 3 :Pr 3+ with 1mol% Zr addition was seen over 100 s with the naked eyes, while the Zr free sample can only have a persistent time of 30 s for the red afterglow after the irradiation with an ultraviolet lamp. The results clearly showed that the phosphorescence lifetime was increased by Zr substitution for Ti.…”
Section: Thermoluminescence Characterizationmentioning
confidence: 99%