Synthesis, Growth, and Luminescence Properties of Rare Earth Borates KSrY(BO3)2: Tb3+ and Tb4
KSrY(BO3)2: Tb3+ and Tb4+ solid solutions have been obtained using the solid-state synthesis and top-seeded solution growth method from the KF flux. Comparing the two types of Tb spectra 3d3/2 TbO2 (Tb4+) and Na3Tb(BO3)2 (Tb3+) with annealing in air of the KSrTb(BO3)2 crystal, X-ray photoelectron...
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Published in | Crystal growth & design Vol. 24; no. 13; pp. 5478 - 5485 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
American Chemical Society
03.07.2024
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Online Access | Get full text |
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Summary: | KSrY(BO3)2: Tb3+ and Tb4+ solid solutions have been obtained using the solid-state synthesis and top-seeded solution growth method from the KF flux. Comparing the two types of Tb spectra 3d3/2 TbO2 (Tb4+) and Na3Tb(BO3)2 (Tb3+) with annealing in air of the KSrTb(BO3)2 crystal, X-ray photoelectron spectroscopy (XPS) revealed that the crystal contains about 15% of Tb4+. The entire Y/Tb series has polymorphic phase transitions that occur at temperatures between 550 and 600 °C. Synthesis and subsequent treatment methodology have an impact on the resulting Tb3+/Tb4+ ratio in the sample. The best luminescent properties were measured on the composition KSrY0.9Tb0.1(BO3)2, which was annealed at 700 °C under a hydrogen flow and cooled slowly. |
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ISSN: | 1528-7483 1528-7505 |
DOI: | 10.1021/acs.cgd.4c00140 |