Synthesis, Growth, and Luminescence Properties of Rare Earth Borates KSrY(BO3)2: Tb3+ and Tb4+


Kuznetsov A.B. Zholdas Y.A. Gorelova L.A. Fedorenko A.D. Ryadun A.A. Seryotkin Y.V. Shevchenko V.S. Kokh A.E. Klimov A.O. Kokh K.A.
3 July 2024American Chemical Society

Crystal Growth and Design
2024#24Issue 135478 - 5485 pp.

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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Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk, 630090, Russian Federation
Center of Physical-Chemical Methods of Research and Analysis, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Saint Petersburg State University, 7/9 Universitetskaya Emb., St Petersburg, 199034, Russian Federation
Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk, 630090, Russian Federation
Synchrotron Radiation Facility─Siberian Circular Photon Source “SKlF″, Boreskov Institute of Catalysis SB RAS, Koltsovo, 630559, Russian Federation

Sobolev Institute of Geology and Mineralogy SB RAS
Center of Physical-Chemical Methods of Research and Analysis
Saint Petersburg State University
Nikolaev Institute of Inorganic Chemistry SB RAS
Synchrotron Radiation Facility─Siberian Circular Photon Source “SKlF″

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