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- W4381189145 abstract "Abstract In this study, it is shown how the photoluminescence, scintillation, and optical thermometric properties are managed via the introduction of Gd 3+ ions into Pr 3+ :Lu 2 Zr 2 O 7 . Raman spectra validate that partial replacement of Lu 3+ with Gd 3+ can promote the phase transition of Lu 2 Zr 2 O 7 host from the defective fluorite structure to the ordered pyrochlore one. Upon 289 nm excitation, all the samples emit the 483 ( 3 P 0 → 3 H 4 ), 581 ( 1 D 2 → 3 H 4 ), 611 ( 3 P 0 → 3 H 6 ), 636 ( 3 P 0 → 3 F 2 ), and 714 nm ( 3 P 0 → 3 F 4 ) emissions from Pr 3+ ions, which are enhanced with the addition of Gd 3+ ions due to the modification of crystal structure. Dissimilarly, the X‐ray excited luminescence spectra consist of a strong emission located at 314 nm from Gd 3+ ions ( 6 P 7/2 → 8 S 7/2 ), together with the typical emissions from Pr 3+ ions, which exhibit different dependences on the Gd 3+ concentration. When the luminescence intensity ratio between the 3 P 0 → 3 H 6 (611 nm) and 1 D 2 → 3 H 4 (581 nm) transitions is selected for temperature sensing, Pr 3+ :(Lu 0.75 Gd 0.25 ) 2 Zr 2 O 7 shows the optimal relative sensing sensitivity of 0.78% K −1 at 303 K, which is higher than that of the Gd 3+ ‐free sample. Therefore, the developed Pr 3+ :(Lu, Gd) 2 Zr 2 O 7 phosphors have the applicative potential for optical thermometry, X‐ray detection, and photodynamic therapy." @default.
- W4381189145 created "2023-06-20" @default.
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- W4381189145 date "2023-06-28" @default.
- W4381189145 modified "2023-10-15" @default.
- W4381189145 title "Effects of Gd<sup>3+</sup> substitution on the structure, photoluminescence, scintillation, and thermometric features of Pr<sup>3+</sup>:Lu<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> phosphors" @default.
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- W4381189145 doi "https://doi.org/10.1111/jace.19276" @default.
- W4381189145 hasPublicationYear "2023" @default.
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