Absorption and luminescence spectra of CeF3-doped BaF2 single crystals and nanoceramics

Федоров, П. П.; Ashurov, M. Kh.; Boboyarova, Sh. G.; Boibobeva, S.; Nuritdinov, I.; Garibin, E. A.; Kuznetsov, S. V.; Smirnov, Alexander

doi:10.1134/s0020168516020047

Cited by 16 publications

(4 citation statements)

References 14 publications

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“…At higher cerium concentrations, the luminescence intensity declines dramatically due to the concentration quenching phenomenon [9]. The decline was observed both for single crystals and for BaF 2 :Ce 3+ optical ceramics [10][11][12][13][14][15]. The concentration decay effect was assigned to defect cluster formation in fluorite-type lattices upon formation of Ba 1−x Ce x F 2+x solid solutions [9].…”

Section: Introductionmentioning

confidence: 99%

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

Yasyrkina¹,

Kuznetsov²,

Alexandrov³

et al. 2021

Nanosystems: Phys. Chem. Math.

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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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Section: Introductionmentioning

confidence: 99%

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

Yasyrkina¹,

Kuznetsov²,

Alexandrov³

et al. 2021

Nanosystems: Phys. Chem. Math.

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“…25 In the contrast, polycrystalline ceramics have not only excellent thermal and mechanical properties, but also have the advantages of low cost, designable size and shape, and high doping concentration of rare earth ions. [26][27][28] Additionally, some reported results show that BaF 2 polycrystalline ceramics have obvious advantages over single crystals in the properties of absolute light yield and scintillation decay time. 29,30,34 For example, In 2010, Demidenko et al reported that the BaF 2 :Ce transparent ceramics produced four times as much light yield as single crystals.…”

Section: Introductionmentioning

confidence: 99%

“…Although BaF 2 single crystals have been studied for many years, some serious defects, such as the perfect cleavage and the cracking make them unsuitable for practical applications 25 . In the contrast, polycrystalline ceramics have not only excellent thermal and mechanical properties, but also have the advantages of low cost, designable size and shape, and high doping concentration of rare earth ions 26–28 . Additionally, some reported results show that BaF 2 polycrystalline ceramics have obvious advantages over single crystals in the properties of absolute light yield and scintillation decay time 29,30,34 .…”

Section: Introductionmentioning

confidence: 99%

The effects of the solution reactant concentration and temperature on the preparation of Pr³⁺:BaF₂ transparent ceramics

Liu

Zhou

et al. 2021

J. Am. Ceram. Soc.

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Barium fluoride (BaF 2 ) crystals are attracting much attention as efficient inorganic scintillator promising for high-energy physics, industrial inspection, and other fields because of the fast component of the decay time (0.6 ns) and high radiation resistance. However, two major drawbacks limit its practical application: (i) a slow decay time of ~600 ns is derived from self-trapping excitons; (ii) the absolute light yield from the fast luminescence component is not competitive. The introducing of rare earth ions and preparation of BaF 2 polycrystalline ceramics is considered to be effective measures to solve these bottlenecks. Pr 3+ is extremely suitable as the activated ion of scintillation materials, which possess emission peaks located in visible band and the faster 5d-4f transition. In this work, highly sinterable Pr 3+ :BaF 2 precursor powder was synthesized via the coprecipitation method by adjusting the reactant concentration and temperature. The morphology and microstructure of as-synthesized powders were characterized using scanning electron microscopy (SEM) and transmittance electron microscopy analysis. The 5 at.% Pr 3+ :BaF 2 transparent ceramic with a transmittance of 50.7% at the wavelength of 500 nm was fabricated by hot pressing the as-prepared powders at 900°C for 4 h under the axial pressure of 50 MPa. The SEM images of ceramic cross-section show that the residual pore is the main light scattering source.The absorption and emission spectrum of ceramic samples were discussed.

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“…Most recently, several works have focused on the investigation of BaF 2 transparent ceramics for scintillator applications. In 2016, Fedorov et al reported the consolidation of Ce 3+ :BaF 2 ceramics by hot pressing and detailed the resulting optical properties of the ceramics. Also in 2016, Luo et al reported the consolidation of Ce:BaF 2 transparent ceramics via vacuum sintering at 1300°C for 6 hours; however, the sample only exhibited translucency, not fully transparency.…”

Section: Introductionmentioning

confidence: 99%