Microstructure and optical characteristics of Ce:Gd3(Ga,Al)5O12 ceramic for scintillator application

Luo, Zhaohua; Jiang, Haochuan; Jiang, Jun; Mao, Rihua

doi:10.1016/j.ceramint.2014.08.137

Cited by 25 publications

(9 citation statements)

References 17 publications

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“…At the same time, the energy resolution was 4.9%@662 keV and the scintillation response was quite fast . It is generally recognized that GGAG:Ce 3+ compounds are promising candidates for scintillator applications …”

Section: Introductionmentioning

confidence: 56%

“…Subsequently, the powders were calcined, molded, and sintered in oxygen atmosphere followed by hot isostatic pressing and annealing treatment. The details of powder preparation and ceramic fabrication were described in detail in our previous work. , …”

Section: Methodsmentioning

confidence: 99%

“…10 It is generally recognized that GGAG:Ce 3+ compounds are promising candidates for scintillator applications. 11 Although GGAG:Ce 3+ crystals with high quality have been grown successfully, the optical behavior of ceramics with similar compounds seems not as good, and some researchers attributed it to the moderate phase stability of GGAG. 12,13 In our previous work of fabricating GGAG ceramics, we observed a similar phenomenon.…”

Section: Introductionmentioning

confidence: 99%

“…The details of powder preparation and ceramic fabrication were described in detail in our previous work. 11,28 2.3. Characterizations.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Yb³⁺ on the Crystal Structural Modification and Photoluminescence Properties of GGAG:Ce³⁺

et al. 2016

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Gadolinium gallium aluminum garnet (GGAG) is a very promising host for the highly efficient luminescence of Ce(3+) and shows potential in radiation detection applications. However, the thermodynamically metastable structure would be slanted against it from getting high transparency. To stabilize the crystal structure of GGAG, Yb(3+) ions were codoped at the Gd(3+) site. It is found that the decomposition of garnet was suppressed and the transparency of GGAG ceramic was evidently improved. Moreover, the photoluminescence of GGAG:Ce(3+),xYb(3+) with different Yb(3+) contents has been investigated. When the Ce(3+) ions were excited under 475 nm, a typical near-infrared region emission of Yb(3+) ions can be observed, where silicon solar cells have the strongest absorption. Basing on the lifetimes of Ce(3+) ions in the GGAG:Ce(3+),xYb(3+) sample, the transfer efficiency from Ce(3+) to Yb(3+) and the theoretical internal quantum efficiency can be calculated and reach up to 86% and 186%, respectively. This would make GGAG:Ce(3+),Yb(3+) a potential attractive downconversion candidate for improving the energy conversion efficiency of crystalline silicon (c-Si) solar cells.

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Section: Introductionmentioning

confidence: 56%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The details of powder preparation and ceramic fabrication were described in detail in our previous work. 11,28 2.3. Characterizations.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Yb³⁺ on the Crystal Structural Modification and Photoluminescence Properties of GGAG:Ce³⁺

et al. 2016

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“…3 and suggest that the α(λ) and k(λ) spectral functions are nonmonotonic and have expressed absorption bands peaking at 440, 340, 300-310, 270 and 230 nm. Earlier [8,9,[26][27][28][29] the absorption bands were accounted for as follows:…”

Section: Resultsmentioning

confidence: 99%

Optical characteristics of single crystal Gd3Al2Ga3O12 : Ce

Козлова¹,

Бузанов²,

Kasimova³

et al. 2018

MoEM

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New emerging high-energy radiation detection techniques are based on the use of rare-earth ion doped materials. There is a great demand for new inorganic scintillators for medical applications, including X-ray and g radiation detection. In these applications, the new scintillating materials must comply with the main requirements such as high optical quality, high light yield, short response time etc. Materials satisfying these requirements include Gd 3 Al 2 Ga 3 O 12 : Ce (GAGG : Ce) scintillating single crystals. By now the optical characteristics of GAGG : Ce have been studied insufficiently. We have therefore measured the spectral reflectance and transmittance characteristics of these crystals using optical spectroscopy in the 200-750 nm range. We have also measured the absorbance and refractive indices and the extinction coefficients, and assessed the optical band gap for GAGG : Ce crystals. For measuring the refractive indices, we have used two spectrophotometric methods, i.e. by the measured Brewster angle and by the reflectance for low incidence angles, i.e., close to the normal. Based on the results we have drawn up the dispersion functions of the refractive indices.

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Scintillators

Chen

Nikl

2021

Processing of Ceramics

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Microstructure and optical characteristics of Ce:Gd3(Ga,Al)5O12 ceramic for scintillator application

Cited by 25 publications

References 17 publications

Effect of Yb³⁺ on the Crystal Structural Modification and Photoluminescence Properties of GGAG:Ce³⁺

Effect of Yb³⁺ on the Crystal Structural Modification and Photoluminescence Properties of GGAG:Ce³⁺

Optical characteristics of single crystal Gd3Al2Ga3O12 : Ce

Scintillators

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Microstructure and optical characteristics of Ce:Gd3(Ga,Al)5O12 ceramic for scintillator application

Cited by 25 publications

References 17 publications

Effect of Yb3+ on the Crystal Structural Modification and Photoluminescence Properties of GGAG:Ce3+

Effect of Yb3+ on the Crystal Structural Modification and Photoluminescence Properties of GGAG:Ce3+

Optical characteristics of single crystal Gd3Al2Ga3O12 : Ce

Scintillators

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Effect of Yb³⁺ on the Crystal Structural Modification and Photoluminescence Properties of GGAG:Ce³⁺

Effect of Yb³⁺ on the Crystal Structural Modification and Photoluminescence Properties of GGAG:Ce³⁺