Influence of the surface state of inorganic scintillation materials on their performance characteristics (review)

Andryushchenko, L. A.; Гринев, Б. В.; Тарасов, В. А.

doi:10.1134/s0020441211050010

Cited by 7 publications

(4 citation statements)

References 28 publications

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“…21 Moreover, the state of a scintillator's surface significantly influences not only its optical and scintillation properties but also its stability under the action of climatic, mechanical, and radiation insults. 26 In this work, we have successfully synthesized Ce:LuPO 4 micro-or nanostructures with different morphologies, such as hollow nanospheres, regular tetrahedrons, and nanorods. To obtain these architectures, the corresponding precursors were synthesized by CA-assisted hydrothermal treatment to control doping possess the largest relative emission intensity and a higher quantum yield among the as-prepared samples.…”

Section: Introductionmentioning

confidence: 99%

“…The 5 D 0 – 7 F 2 / 5 D 0 – 7 F 1 intensity ratio of Eu:LaPO 4 nanostructures changes as the crystal size and shape are varied . Moreover, the state of a scintillator’s surface significantly influences not only its optical and scintillation properties but also its stability under the action of climatic, mechanical, and radiation insults …”

Section: Introductionmentioning

confidence: 99%

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Crystallization-Dependent Luminescence Properties of Ce:LuPO₄

Sun

Wang

et al. 2016

Inorg. Chem.

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The luminescence properties of Ce:LuPO4 depend on both the Ce(3+) center and the host lattice. In this article, we studied the dependence of the luminescence properties of Ce:LuPO4 on both the doping concentration of Ce(3+) and the size and morphology of the LuPO4 matrix at micro- and nanosize regimes. The crystalline behavior of Ce:LuPO4, including its size and shape, was investigated via precursor transformation crystallization. On the basis of this crystallization approach, Ce:LuPO4 hollow nanospheres, nanorods, and regular tetrahedrons were obtained. For micro- and nanostructured Ce:LuPO4, the surface-induced chemical bonding architecture can be effectively varied by controlling the size of the crystalline material and its geometry. Our experimental observations demonstrate that one-dimensional Ce:LuPO4 nanorods doped with 0.1 mol % Ce(3+) possess the best performance among the as-prepared samples. The significant anisotropy of Ce:LuPO4 nanorods can result in a larger specific surface area and enhanced luminescence properties. Moreover, the improved luminescence property of Ce:LuPO4 nanostructures can also be optimized by increasing the preferential anisotropic chemical bonding architecture to regulate the 5d level of Ce(3+). Our work also shows that the photoluminescence emission intensity of Ce:LuPO4 nanorods is increased as the surface area normal to their axial direction increases. From the standpoint of crystallization, the luminescence properties of Ce(3+) in nano- and microsize matrixes can be well-optimized by controlling the crystalline behavior of the host lattice under proper synthesis conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Crystallization-Dependent Luminescence Properties of Ce:LuPO₄

Sun

Wang

et al. 2016

Inorg. Chem.

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“…Scintillation materials convert the radiation of high-energy rays (X-rays or gamma rays) into visible light and are extensively applied in various fields such as safety inspection, high energy physics, nuclear medicine, and industrial non-destructive testing [ 1 , 2 , 3 , 4 , 5 , 6 ]. Scintillators can be divided into solid, liquid, and gaseous states, among which solid inorganic scintillators, as the most widely used materials, include single crystals and polycrystalline ceramics.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Green-Emitting Gd2O2S:Pr3+ Phosphor Nanoparticles and Fabrication of Translucent Gd2O2S:Pr3+ Scintillation Ceramics

2020

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A translucent Gd2O2S:Pr ceramic scintillator with an in-line transmittance of ~31% at 512 nm was successfully fabricated by argon-controlled sintering. The starting precipitation precursor was obtained by a chemical precipitation route at 80 °C using ammonia solution as the precipitate, followed by reduction at 1000 °C under flowing hydrogen to produce a sphere-like Gd2O2S:Pr powder with an average particle size of ~95 nm. The Gd2O2S:Pr phosphor particle exhibits the characteristic green emission from 3P0,1→3H4 transitions of Pr3+ at 512 nm upon UV excitation into a broad excitation band at 285–335 nm arising from 4f2→4f5d transition of Pr3+. Increasing Pr3+ concentrations induce two redshifts for the two band centers of 4f2→4f5d transition and lattice absorption on photoluminescence excitation spectra. The optimum concentration of Pr3+ is 0.5 at.%, and the luminescence quenching type is dominated by exchange interaction. The X-ray excited luminescence spectrum of the Gd2O2S:Pr ceramic is similar to the photoluminescence behavior of its particle. The phosphor powder and the ceramic scintillator have similar lifetimes of 2.93–2.99 μs, while the bulk material has rather higher external quantum efficiency (~37.8%) than the powder form (~27.2%).

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“…Various techniques of fabricating nanosized particles of powders based on aluminum oxide are known, for instance, synthesis by pulse heating, hydroxide sol-gel deposition with subsequent thermal treatment, self-propagating high-temperature synthesis (SHS), or mechanical-chemical methods [21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Nanoparticulate Zirconia-Modified Solid Solutions of Aluminum-Iron Oxides for Polishing Titanium Metal

Koroleva¹

2015

DREAM

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A synthesis mechanism of nanoparticulate zirconia-modified Al 2-x Fe x O 3 solid solutions has been studied with the application of X-ray diffraction, IR spectroscopy, DTA, particle-size analysis and chemical analysis. The solid solutions have been prepared via heat treatment of ammonium hydroxycarbonate complexes. The nanoparticles are shown to consist of crystalline rhombohedral α-Al 2-x Fe x O 3 , monoclinic and tetragonal (M-ZrO 2 and T-ZrO 2 ). The synthesized mixed oxide offers a high polishing ability (3 to 4.5 times as high), as demonstrated in polishing of titanium, and ensures surface roughness values R a ranging between 0.019 and 0.009 μm.

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Influence of the surface state of inorganic scintillation materials on their performance characteristics (review)

Cited by 7 publications

References 28 publications

Crystallization-Dependent Luminescence Properties of Ce:LuPO₄

Crystallization-Dependent Luminescence Properties of Ce:LuPO₄

Synthesis of Green-Emitting Gd2O2S:Pr3+ Phosphor Nanoparticles and Fabrication of Translucent Gd2O2S:Pr3+ Scintillation Ceramics

Nanoparticulate Zirconia-Modified Solid Solutions of Aluminum-Iron Oxides for Polishing Titanium Metal

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Influence of the surface state of inorganic scintillation materials on their performance characteristics (review)

Cited by 7 publications

References 28 publications

Crystallization-Dependent Luminescence Properties of Ce:LuPO4

Crystallization-Dependent Luminescence Properties of Ce:LuPO4

Synthesis of Green-Emitting Gd2O2S:Pr3+ Phosphor Nanoparticles and Fabrication of Translucent Gd2O2S:Pr3+ Scintillation Ceramics

Nanoparticulate Zirconia-Modified Solid Solutions of Aluminum-Iron Oxides for Polishing Titanium Metal

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Crystallization-Dependent Luminescence Properties of Ce:LuPO₄

Crystallization-Dependent Luminescence Properties of Ce:LuPO₄