Structural, microstructural, and luminescent properties of laser-sintered Eu-doped YAG ceramics

Santos, J.C.A.; Silva, E.P.; Sampaio, D.V.; Alves, Y.G.S.; Rezende, Marcos V. dos S.; Kucera, Courtney; Ballato, John; Silva, R.S.

doi:10.1016/j.optmat.2019.01.038

Cited by 13 publications

(3 citation statements)

References 32 publications

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“…21. Laser sintering 8,9) was done on 4 mm diameter pellets obtained by uniaxially pressing the powders at 100 MPa. The pellets were sintered using a CO 2 laser (GEM-100L-Coherent) in continuous wave mode as the heating source.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…The intrinsic scintillator Bi 4 Ge 3 O 12 (BGO) was the first to be fabricated by laser sintering. [2][3][4] Later, doped phosphors were also fabricated, including Y 2 O 3 5) and Y 3 Al 5 O 5 (YAG), [6][7][8][9][10] concomitant to an intense effort focused on aluminate-based persistent phosphors. [11][12][13][14][15] Overall, high densities, typically ⩾95% of the theoretical density were obtained, the achievement of optical transparency remains a challenge.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of ceramic scintillators by laser sintering: the case of Lu₃Al₅O₁₂:Pr

Shao

Conner

Souza

et al. 2022

Jpn. J. Appl. Phys.

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The fabrication of ceramic scintillators by laser sintering is briefly reviewed and current limitations discussed. The experimental work focused on the fabrication and characterization of undoped and Pr-doped Lu3Al5O12 (LuAG). X-ray diffraction (XRD) and Raman spectroscopy were used to characterize the structure of the sintered ceramics, with XRD results suggesting the absence of residual thermal stresses. Collectively, Raman results suggested the incorporation of Pr to affect the structure and its dynamics. Broadening of the peaks of the ceramics in relation to those from the single crystal revealed the presence of structural disorder. Scanning electron microscopy revealed intergrain porosity thus explaining the lack of optical transparency. Energy-dispersive X-ray spectroscopy (EDX) measurements showed Pr to be homogeneously distributed. Radioluminescence measurements under X-ray excitation as a function of the temperature were used to investigate intrinsic defects of the host, including anti-sites and F-type defects.

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Section: Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fabrication of ceramic scintillators by laser sintering: the case of Lu₃Al₅O₁₂:Pr

Shao

Conner

Souza

et al. 2022

Jpn. J. Appl. Phys.

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“…Therefore, the doping of material increases the radiation centers and energy transfer from the host to luminescence centers [9]. Therefore, from an academic viewpoint, the investigation of new Eu-doped materials is very interesting [10]. YAG doped with Eu 2+ and Eu 3+ ions is very interesting as a phosphor center for converting a light-emitting diode light to white light sources [11].…”

Section: Introductionmentioning

confidence: 99%

Features of the Spectroscopic Characteristics of Yttrium–Aluminum Garnets Doped with Europium at Different Concentrations

et al. 2023

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The article presents the results of measuring the luminescence spectra and luminescence excitation spectra for YAG:Eu with europium concentrations of 2, 6, 8, and 10%. The materials were synthesized by solid-phase synthesis. For samples with europium concentrations of 2, 8, and 10%, the diffraction patterns showed full agreement with the phases. However, the yttrium–aluminum–perovskite phase was present in the sample with a concentration of 6%, even though the samples were obtained under the same conditions. The spectra of the photoluminescence excitation and photoluminescence were recorded for all samples. The concentration dependences of the luminescence bands and luminescence excitation bands were also plotted. The bandgap and absorption spectra were simulated for the sample of YAG:Eu, doped with 2–4 ions of europium for comparison.

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Sintering YAG:Ce phosphor ceramic layers onto glass substrates by CO2 laser for WLED applications

Chiu

Nien

Chen

2023

Current Applied Physics

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Structural, microstructural, and luminescent properties of laser-sintered Eu-doped YAG ceramics

Cited by 13 publications

References 32 publications

Fabrication of ceramic scintillators by laser sintering: the case of Lu₃Al₅O₁₂:Pr

Fabrication of ceramic scintillators by laser sintering: the case of Lu₃Al₅O₁₂:Pr

Features of the Spectroscopic Characteristics of Yttrium–Aluminum Garnets Doped with Europium at Different Concentrations

Sintering YAG:Ce phosphor ceramic layers onto glass substrates by CO2 laser for WLED applications

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Structural, microstructural, and luminescent properties of laser-sintered Eu-doped YAG ceramics

Cited by 13 publications

References 32 publications

Fabrication of ceramic scintillators by laser sintering: the case of Lu3Al5O12:Pr

Fabrication of ceramic scintillators by laser sintering: the case of Lu3Al5O12:Pr

Features of the Spectroscopic Characteristics of Yttrium–Aluminum Garnets Doped with Europium at Different Concentrations

Sintering YAG:Ce phosphor ceramic layers onto glass substrates by CO2 laser for WLED applications

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Product

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Fabrication of ceramic scintillators by laser sintering: the case of Lu₃Al₅O₁₂:Pr

Fabrication of ceramic scintillators by laser sintering: the case of Lu₃Al₅O₁₂:Pr