Photoluminescence properties were improved in CaTiO3:Pr3+ phosphor by substitution of Ba and Sr for Ca to a large extent of Ba (0–20%) and Sr (0–45%) fractions. Red emission intensity at 612 nm was greatly enhanced. It achieved its largest value in Ca0.7Sr0.3TiO3:Pr3+ sample, higher by 192% than CaTiO3:Pr3+. Enhancement of red emission in Ba and Sr added CaTiO3:Pr3+ is inferred to originate from improvement of Pr3+ 4f5d capture probability to electrons in the host conduction band and charge transfer state, which are lowered by Ba and Sr addition.
No takes yet. Share an insight, caveat, or question.
Wang et al. (2005) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: