Optical and Scintillation Properties of Ce<sup>3+</sup>‐Doped LuAG and YAG Transparent Ceramics: A Comparative Study

Li, Jiang; Sahi, Sunil; Groza, Michael; Pan, Yubai; Bürger, A.; Kenarangui, R.; Chen, Wei

doi:10.1111/jace.14461

Cited by 38 publications

(22 citation statements)

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“…Owing to the parity-allowed 5f-4d electronic transition of Ce 3+ , the emission band ranges from 450 to 750 nm, centered at about 525 nm. 31,32 It can easily be seen from Figure 3A that all the ceramic samples exhibit high steady-state luminescence efficiency compared with that of the BGO crystal. Furthermore, the steady-state luminescence efficiency of LuAG:Ce ceramic depends on the concentration of Ca 2+ co-dopants.…”

Section: Resultsmentioning

confidence: 98%

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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Section: Resultsmentioning

confidence: 98%

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

Jiang

Feng

et al. 2020

J. Am. Ceram. Soc.

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“…Calcining the precursors produced sinterable (Gd,Lu) 3 Al 5 O 12 :Ce garnet powders, with which highly transparent (Gd,Lu) 3 Al 5 O 12 :Ce ceramics were successfully fabricated via vacuum sintering. Our systematic investigation of particle synthesis, ceramic preparation, and optical property yields the following conclusions: (a) the precursors with hollow structure morphologies were substantially homogeneous solid solutions, and collapsed into round, fine garnet powders via pyrolysis; (b) the particle-synthetic parameter R and aging time both play important roles in the optical quality of (Gd,Lu) 3 Al 5 O 12 :Ce ceramics; the optimum R is 2.5 and optimum aging time is 1 hour; (c) both the garnet phosphor powder and transparent (14)…”

Section: Discussionmentioning

confidence: 99%

“…As a member of garnet family, green‐light‐emitting lutetium aluminum garnet (Lu 3 Al 5 O 12 :Ce, LuAG:Ce) has a high ρ of 6.67 g/cm 3 and a large Z eff of 63 with a fast response and a high luminescence efficiency. It is therefore a candidate for scintillation material . However, the high cost of lutetium compounds severely restricts the industrial development and the practical application of Lu 3 Al 5 O 12 :Ce.…”

Section: Introductionmentioning

confidence: 99%

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Production and optical properties of Ce³⁺‐activated and Lu³⁺‐stabilized transparent gadolinium aluminate garnet ceramics

2019

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We first report the novel Ce3+‐activated and Lu3+‐stabilized gadolinium aluminate garnet (GAG) transparent ceramics derived from their precipitation precursors via a facile co‐precipitation strategy using ammonium hydrogen carbonate (AHC) as the precipitant. The resulting precursors in liquid phase were substantially homogeneous solid solutions and could directly convert into sinterable garnet powders via pyrolysis. Substituting 35 at.% of Lu3+ for Gd3+ was effective to stabilize the cubic GAG garnet structure and transparent (Gd,Lu)3Al5O12:Ce ceramics were successfully fabricated by vacuum sintering at 1715°C. The ceramic transparency was improved by optimizing the particle processing conditions and the best sample had an in‐line transmittance of ~70% at 580 nm (Ce3+ emission center) and over 80% in partial infrared region with a fine average grain size of ~4.5 μm. Transparent (Gd,Lu)3Al5O12:Ce ceramics have a short critical wavelength (<200 nm) and a maximal infrared cut‐off at ~6.6 μm. Both the (Gd,Lu)3Al5O12:Ce phosphor powder and the transparent ceramic exhibited characteristic yellow emission of Ce3+ with strong broad emission bands from 490 to 750 nm upon UV excitation into two groups of broad bands around 340 and 470 nm. The photoluminescence and photoluminescence excitation intensities as well as the quantum yield were greatly enhanced via high‐temperature densification. Both the phosphor powder and ceramic bulk had short effective fluorescence lifetimes.

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“…Rare earth (RE) ion doped luminescent materials have been attracting a great deal of attention as candidates to achieve versatile optical applications in white light‐emitting diodes (WLEDs), display devices, scintillators, lasers, and sensors . RE ions have distinctive electron configurations in which 4f − 4f electron transitions take place, endowing them with unique physicochemical properties.…”

Section: Introductionmentioning

confidence: 99%

Molten‐Salt‐Assisted Synthesis of Na₃Bi(PO₄)₂:Eu³⁺ Nanoparticles with Strong Red Emission

Boyi

Yao

Liu

2019

Physica Status Solidi (a)

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Single phase Eu 3þ -doped Na 3 Bi(PO 4 ) 2 (NBPO) nanoparticles with different Eu 3þ concentrations are successfully synthesized by a molten-salten method using Na 3 PO 4 Á 12H 2 O both as reaction medium and as reactant. The influence of synthesis conditions such as the Na 3 PO 4 Á 12H 2 O content, heating temperature, and time on the crystal structure of the final products is investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). It reveals that pure phase Na 3 Bi(PO 4 ) 2 nanoparticles with size about 100 nm are successfully achieved when the mixture (molar ratio of 1:4 between Bi(NO 3 ) 3 Á 5H 2 O and Na 3 PO 4 Á 12H 2 O) is heated at 180 C for 12 h. After Eu 3þ -doping, NBPO:Eu 3þ nanoparticles exhibit bright red emission peaking at 620 nm under the excitation of the near ultraviolet (NUV) light. The luminescence is attributed to the electric dipole transition 5 D 0 ! 7 F 2 of Eu 3þ ions. The luminescent intensity of the NBPO:Eu 3þ phosphors is strongly dependent on the Eu 3þ content and concentration quenching occurred when the Eu 3þ concentration is larger than 8 mol%, which is attributed to dipole-dipole interaction. This work provides a green way for the synthesis of phosphate-based nanomaterials and suggests that Eu 3þdoped Na 3 Bi(PO 4 ) 2 has a great potential application in the lighting and display fields.

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Optical and Scintillation Properties of Ce³⁺‐Doped LuAG and YAG Transparent Ceramics: A Comparative Study

Cited by 38 publications

References 50 publications

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

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

Production and optical properties of Ce³⁺‐activated and Lu³⁺‐stabilized transparent gadolinium aluminate garnet ceramics

Molten‐Salt‐Assisted Synthesis of Na₃Bi(PO₄)₂:Eu³⁺ Nanoparticles with Strong Red Emission

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Optical and Scintillation Properties of Ce3+‐Doped LuAG and YAG Transparent Ceramics: A Comparative Study

Cited by 38 publications

References 50 publications

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

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

Production and optical properties of Ce3+‐activated and Lu3+‐stabilized transparent gadolinium aluminate garnet ceramics

Molten‐Salt‐Assisted Synthesis of Na3Bi(PO4)2:Eu3+ Nanoparticles with Strong Red Emission

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Product

Resources

About

Optical and Scintillation Properties of Ce³⁺‐Doped LuAG and YAG Transparent Ceramics: A Comparative Study

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

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

Production and optical properties of Ce³⁺‐activated and Lu³⁺‐stabilized transparent gadolinium aluminate garnet ceramics

Molten‐Salt‐Assisted Synthesis of Na₃Bi(PO₄)₂:Eu³⁺ Nanoparticles with Strong Red Emission