Influence of cerium doping concentration on the optical properties of Ce,Mg:LuAG scintillation ceramics

Chen, Xiaopu; Hu, Zhijuan; Cao, Maoqing; Hu, Chen; Liu, Shuping; Chen, Hao‐Hong; Shi, Yun; Kou, Huamin; Xie, Ting; Vedda, A.; Jarý, V.; Kučerková, Romana; Nikl, M.; Li, Jiang

doi:10.1016/j.jeurceramsoc.2018.03.023

Cited by 26 publications

(15 citation statements)

References 27 publications

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“…A possible route could be the use of proper co‐dopants or the investigation of the role of Ce concentration. In fact, a recent study on annealed LuAG:Ce,Mg ceramics reported that the 280 °C TSL peak intensity (observed in this case around 250 °C) depends on Ce concentration in a way that cannot be explained only with a different efficiency of the luminescence center …”

Section: Resultsmentioning

confidence: 85%

Evidence of Optically Stimulated Luminescence in Lu₃Al₅O₁₂:Ce

Gallo

Veronese

Vedda

et al. 2019

Physica Status Solidi (a)

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Lutetium aluminum garnet, commonly known as LuAG, is a versatile material finding numerous optical applications, and whose scintillation properties have been widely investigated. In this study, experimental evidences of optically stimulated luminescence (OSL) phenomena occurring in LuAG:Ce crystals are shown. After demonstrating the possibility to optically bleach an electron trap responsible for a thermally stimulated luminescence (TSL) peak at 280 C (heating rate 1.7 C s À1 ) using red light, a direct measurement of the OSL decay curve and of the resulting characteristic Ce 3þ 5d-4f emission spectrum is carried out. The assessment of the bleaching spectrum of the TSL peak at 280 C reveals that light with wavelength in the 600-650 nm interval is the most efficient in depleting the TSL peak, making He-Ne lasers suitable sources of optical stimulation. The finding of OSL features in LuAG: Ce paves the way to new application perspectives. In particular, the achievement of a good balance between scintillation and energy storage properties of LuAG.Ce can drive a constructive integration between X-rays imaging approaches based on photo-stimulable phosphors and those exploiting scintillating materials.

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Section: Resultsmentioning

confidence: 85%

Evidence of Optically Stimulated Luminescence in Lu₃Al₅O₁₂:Ce

Gallo

Veronese

Vedda

et al. 2019

Physica Status Solidi (a)

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“…Several examples of these ions activating scintillation properties can be seen in reference. [15][16][17][18][19][20] Besides, Ce 3+ and Pr 3+ are considered as the most appropriate doping ions, because the scintillation emission peaks of these two ions are located in the visible band, which can produce efficient luminescence with nearly free of self-absorption. 8 Many studies on cerium-doped BaF 2 crystal have been reported.…”

Section: Introductionmentioning

confidence: 99%

“…In the rare‐earth family, Ce 3+ , Pr 3+ , Eu 2+ , and Yb 3+ are well‐known to researchers for the 5 d –4 f transition, which allowed by electric‐dipole, and are very fast, with lifetimes of the order of dozens of nanoseconds. Several examples of these ions activating scintillation properties can be seen in reference 15–20 . Besides, Ce 3+ and Pr 3+ are considered as the most appropriate doping ions, because the scintillation emission peaks of these two ions are located in the visible band, which can produce efficient luminescence with nearly free of self‐absorption 8 .…”

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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“…Over the past few decades, as the requirements for scintillation properties in medical imaging and high energy physics (HEP) experiments have become more stringent, a variety of scintillation materials have been developed. Among them, lutetium aluminum garnet with cerium as the luminescence center (LuAG:Ce) is one of the most promising scintillators due to its excellent scintillation performance 3‐5 . However, the low light yield value and the large slow components contamination in the scintillation response have greatly limited the practical application of LuAG:Ce 6 .…”

Section: Introductionmentioning

confidence: 99%

“…with cerium as the luminescence center (LuAG:Ce) is one of the most promising scintillators due to its excellent scintillation performance. [3][4][5] However, the low light yield value and the large slow components contamination in the scintillation response have greatly limited the practical application of LuAG:Ce. 6 As is widely known, a scintillation process can be simply described in terms of the following three stages: Energy conversion, carrier transport, and luminescence, where the carriers transport stage is sensitive to various intrinsic defects and impurities in the host lattice.…”

mentioning

confidence: 99%

On fast LuAG:Ce scintillation ceramics with Ca²⁺ co‐dopants

Jiang

Feng

et al. 2020

J. Am. Ceram. Soc.

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Scintillation materials, as optical functional materials that can absorb high-energy rays or particles and convert them into low-energy photons, have been successfully applied in various application fields. 1,2 Over the past few decades, as the requirements for scintillation properties in medical imaging and high energy physics (HEP) experiments have become more stringent, a variety of scintillation materials have been developed. Among them, lutetium aluminum garnet

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Influence of cerium doping concentration on the optical properties of Ce,Mg:LuAG scintillation ceramics

Cited by 26 publications

References 27 publications

Evidence of Optically Stimulated Luminescence in Lu₃Al₅O₁₂:Ce

Evidence of Optically Stimulated Luminescence in Lu₃Al₅O₁₂:Ce

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

On fast LuAG:Ce scintillation ceramics with Ca²⁺ co‐dopants

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Influence of cerium doping concentration on the optical properties of Ce,Mg:LuAG scintillation ceramics

Cited by 26 publications

References 27 publications

Evidence of Optically Stimulated Luminescence in Lu3Al5O12:Ce

Evidence of Optically Stimulated Luminescence in Lu3Al5O12:Ce

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

On fast LuAG:Ce scintillation ceramics with Ca2+ co‐dopants

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Evidence of Optically Stimulated Luminescence in Lu₃Al₅O₁₂:Ce

Evidence of Optically Stimulated Luminescence in Lu₃Al₅O₁₂:Ce

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

On fast LuAG:Ce scintillation ceramics with Ca²⁺ co‐dopants