Comparative study of optical and scintillation properties of Ce:YAGG, Ce:GAGG and Ce:LuAGG transparent ceramics

Mori, M.; Xu, Jian; Okada, Go; Yanagida, Takayuki; Ueda, Jumpei; Tanabe, Setsuhisa

doi:10.2109/jcersj2.15239

Cited by 34 publications

(23 citation statements)

References 24 publications

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“…Compared to the (Gd,Y)AG:Ce 3+ 0.01 phosphor, the emission peaks of the (Gd,Y)AG:Ga 3+ x/Ce 3+ 0.01 phosphors blue shift from ~567 nm to ~549 nm when monitored at optimal excitation wavelengths of these phosphors with the concentration of Ga 3+ increased from 10 at.% to 80 at.%. [21] The phenomenon is consistent with the results of the excitation spectrum of Fig. 2a.…”

Section: Resultssupporting

confidence: 91%

Study on Design, Synthesis and Controlled Color Emission of (Gd,Y)AG: Ce3+ Based Phosphors Through Replacing Al3+ Partly

Ma¹,

Liu²,

Li³

et al. 2020

ES Mater. Manuf.

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Owing to its excellent yellow light emission, the (Gd,Y)AG:Ce 3+ based phosphors have been widely studied. In this paper, the (Gd,Y)3(Al1-xGax)5O12:Ce 3+ (x=0.1-0.8) and (Gd,Y)3(Al1-2yMgySiy)5O12:Ce 3+ (y=0.05-0.4) phosphors were successfully prepared by coprecipitation and high temperature solid phase method, respectively. The lattice stabilization, microstructure and fluorescence properties were systematically investigated. With increasing the concentration of Ga 3+ , the emission peaks of (Gd,Y)3Al5O12:Ga 3+ /Ce 3+ phosphors displayed a blue-shift from ~575 nm (yellow) to ~549 nm (yellow-green), and the decay time was decreased gradually. However, the emission peaks of (Gd,Y)AG:Mg 2+ /Si 4+ /Ce 3+ phosphors red shifted from ~575 nm (yellow) to ~592 nm (orange-red) with increasing the concentration of Mg 2+ /Si 4+ , and the decay time change was similar to the former. The underlying mechanisms were thoroughly investigated and elucidated. In addition, the effect of temperature on the fluorescence properties of (Gd,Y)AG:Ce 3+ based phosphors was investigated in detail. The (Gd,Y)AG:Ce 3+ based phosphors show promising potential in various lighting and optical display applications.

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Section: Resultssupporting

confidence: 91%

Study on Design, Synthesis and Controlled Color Emission of (Gd,Y)AG: Ce3+ Based Phosphors Through Replacing Al3+ Partly

Ma¹,

Liu²,

Li³

et al. 2020

ES Mater. Manuf.

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“…[26] and LYSO [2] according to the manufacturers. * We note that the upper limit of the emission spectral range of GaGG:Ce quoted in the literature is mostly between 650-750 nm [8,11,13].…”

Section: Gagg:ce Detector Modulesmentioning

confidence: 76%

“…Gadolinium Aluminum Gallium Garnet doped with Cerium (GaGG:Ce), Gd 3 Al 2 Ga 3 O 12 :Ce, is a relatively new material that first appeared less than 10 years ago, offering significantly higher light output than LYSO [6,7]. It has been investigated in various form-factors and readout configurations and the results also demonstrated an improved energy resolution [8][9][10][11][12]. It is also advantageous by not having intrinsic radioactivity, which makes it a good candidate for single arm (i.e., non-coincidence) applications.…”

Section: Introductionmentioning

confidence: 99%

Investigation of GaGG:Ce with TOFPET2 ASIC Readout for Applications in Gamma Imaging Systems

et al. 2020

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We investigated two detector modules, each consisting of a 8 × 8 matrix of GaGG:Ce crystals with a crystal size of 3 × 3 × 20 mm3 and a 3.2 mm pitch. The light is collected by a 8 × 8 silicon photomultiplier array, with one silicon photomultiplier matching one crystal. The signals are read out and processed using the TOFPET2 ASIC. Performed laboratory tests of the detectors were performed using a 22Na source, where energy and coincidence time resolution with different optical coupling were examined between the crystals and silicon photomultipliers, as well as under various operating voltages. The mean energy resolution of 9.8±0.6% at 511 keV was observed and it was shown that the coincidence time resolution of 384±33 ps could be achieved. The results reassure that the GaGG scintillator is a very promising candidate for the development of imaging systems, in particular, ones utilizing Compton scattering where the energy resolution plays a critical role and a moderate timing performance is acceptable.

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“…Ce‐doped YAG was developed for scintillator detectors by Autrata in 1978 127 . Since then, significant development and engineering of solid solution Ce‐doped garnet crystals resulted in crystals with a higher scintillation light yield, compared to pure YAG and LuAG systems 128,129 . Solid solution garnet also produces broader emission bands and a shorter laser pulse duration, making solid garnet materials good candidates for pulse laser applications 130 .…”

Section: A3b5o12 Garnet Ceramicsmentioning

confidence: 99%

High‐entropy transparent ceramics: Review of potential candidates and recently studied cases

Zhang

2021

Int J Applied Ceramic Tech

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High‐entropy ceramics have been widely explored and extensively studied since the first demonstration of the configuration entropy stabilized reversible transitions between multiple and single phases by Rost et al. in 2015. Most of the current research on high‐entropy ceramics has focused on properties like thermal conductivity, thermoelectricity, structures, and others. Some recent studies have extended the high‐entropy concept to the field of transparent ceramics. We reviewed these papers and proposed four potential ceramics groups for high‐entropy transparent ceramics including fluoride ceramics, fluorite‐deficient and/or ordered pyrochlore A2B2O7 ceramics, garnet ceramics, and sesquioxide ceramics. In this article, we review ceramic powder synthesis, the fabrication of transparent ceramics, high‐entropy ceramics, and limited cases of high‐entropy transparent ceramics for each category. High‐entropy transparent ceramics with diverse compositions and structures will provide more possibilities for functional transparent ceramics in the future.

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Comparative study of optical and scintillation properties of Ce:YAGG, Ce:GAGG and Ce:LuAGG transparent ceramics

Cited by 34 publications

References 24 publications

Study on Design, Synthesis and Controlled Color Emission of (Gd,Y)AG: Ce3+ Based Phosphors Through Replacing Al3+ Partly

Study on Design, Synthesis and Controlled Color Emission of (Gd,Y)AG: Ce3+ Based Phosphors Through Replacing Al3+ Partly

Investigation of GaGG:Ce with TOFPET2 ASIC Readout for Applications in Gamma Imaging Systems

High‐entropy transparent ceramics: Review of potential candidates and recently studied cases

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