Preparation and X-ray luminescence of Ba4±xCe3±xF17±x solid solutions

Yasyrkina, Daria S.; Kuznetsov, S. V.; Alexandrov, A. A.; Батыгов, С. Х.; Voronov, V. V.; Федоров, П. П.

doi:10.17586/2220-8054-2021-12-4-505-511

Nanosystems: Phys. Chem. Math.

2021

DOI: 10.17586/2220-8054-2021-12-4-505-511

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Preparation and X-ray luminescence of Ba4±xCe3±xF17±x solid solutions

Daria S. Yasyrkina¹,

S. V. Kuznetsov²,

A. A. Alexandrov³

et al.

Abstract: Single-phase BaF 2 :Ce solid solutions containing 30 -40 mol. % cerium with the simultaneous entry of potassium into the crystal lattice in an amount of 0.7 -0.8 mol. % were prepared by coprecipitation from aqueous nitrate solutions with potassium fluoride as the fluoridating agent. The cerium X-ray luminescence intensity increases in response to increasing cerium concentration contrary to the concentration quenching effect.

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Spectral and Cathodoluminescence Decay Characteristics of the Ba1−xCexF2+x (x = 0.3–0.4) Solid Solution Synthesized by Precipitation from Aqueous Solutions and Fusion

Kuznetsov,

Yasyrkina,

Valiev

et al. 2023

Photonics

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Single-phase samples of the Ba1−xCexF2+x solid solution (x = 0.3–0.4) were synthesized by directional crystallization in the form of single crystals and by co-precipitation from aqueous nitrate solutions using potassium fluoride as a fluorinating agent in the form of nanopowders. The cathodoluminescence of the pressed powder samples was studied in comparison with the BaF2: Ce single crystals in 250–460 nm (2.7–5 eV) spectral range upon excitation by an electron accelerator. The cathodoluminescence spectra of the samples revealed a wide band in the range of 3.0–4.0 eV, which consists of two typical components of Ce3+ with decay time 23 ns in the case of single crystals and three decay times 27 ns, 140–170 ns, and ~600 ns in the case of pressed powders. The decay time of the short-wavelength component (27 ns) in the case of pressed powders is close to the lifetime of the excited state of the Ce3+ ion. The developed X-ray phosphors can be applied for embedding in diamonds for diamond–nanoparticle composite preparation.

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Spectral and Cathodoluminescence Decay Characteristics of the Ba1−xCexF2+x (x = 0.3–0.4) Solid Solution Synthesized by Precipitation from Aqueous Solutions and Fusion

Kuznetsov,

Yasyrkina,

Valiev

et al. 2023

Photonics

View full text Add to dashboard Cite

show abstract

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Preparation and X-ray luminescence of Ba4±xCe3±xF17±x solid solutions

Cited by 1 publication

References 37 publications

Spectral and Cathodoluminescence Decay Characteristics of the Ba1−xCexF2+x (x = 0.3–0.4) Solid Solution Synthesized by Precipitation from Aqueous Solutions and Fusion

Spectral and Cathodoluminescence Decay Characteristics of the Ba1−xCexF2+x (x = 0.3–0.4) Solid Solution Synthesized by Precipitation from Aqueous Solutions and Fusion

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