Radiation induced luminescence properties of Ce-doped Y2O3-Al2O3-SiO2 glass prepared using floating zone furnace

Isokawa, Yuya; Nakauchi, Daisuke; Okada, Go; Kawaguchi, Noriaki; Yanagida, Takayuki

doi:10.1016/j.jallcom.2018.12.245

Cited by 19 publications

(9 citation statements)

References 30 publications

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“…30,31 Despite the different initial densities, all the final structures achieved at room temperature are found to be stabilized at 2.41 ± 0.01 g/cm 3 , corresponding to simulation boxes of 75.7 * 75.7 * 75.7 Å 3 and ruling out the dependence of glass density on the initial guesses. Therefore, the structures annealed from 2.4 g/cm 3 were collected in the NVE ensemble for analysis, with 200 configurations sampled at regular intervals during a 100 ps simulation for each glass species. Upon further energy minimization, the eigenvalue and eigenvector of each vibrational mode were computed by diagonalization of the dynamic matrixes for the smaller supercells of 27.9 * 27.9 * 27.9 Å 3 .…”

Section: Methodsmentioning

confidence: 99%

“…Cerium-containing glasses have stimulated extensive research interest due to their broad applications in radiation dosimetry and optical engineering. [1][2][3][4][5][6] Exhibiting unique separations between the 5d and 4f energy levels of Ce ions, these materials are commonly used for particle detectors and laser activators. In particular, Ce-doped silica has recently been proposed as a candidate absorber for the inertial confinement fusion facilities to protect the transport mirrors from laser back-reflection, which inclines to damage the surfaces and enforce frequent exchanges of optics consequently.…”

Section: Introductionmentioning

confidence: 99%

“…Cerium‐containing glasses have stimulated extensive research interest due to their broad applications in radiation dosimetry and optical engineering 1‐6 . Exhibiting unique separations between the 5d and 4f energy levels of Ce ions, these materials are commonly used for particle detectors and laser activators.…”

Section: Introductionmentioning

confidence: 99%

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Structure and vibrations of cerium in silica glass from molecular dynamics simulations

et al. 2020

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Molecular dynamics simulations are performed to investigate the effect of cerium on the structural and vibrational properties of silica glass. At low-concentration levels, the cerium ions tend to generate longer bonds with bridging oxygens than nonbridging ones, the proportion of which is associated with the average bond length varied with cerium coordination. Formed in the presence of cerium, the bond angles exhibit strong dependence on the types of Ce-O bonds that bring about different angular distributions. Despite the discrepancy in the structures between Ce 3+ and Ce 4+ , similar characteristics of vibrations are observed for the two states. In comparison with the glass formers, the vibrations of cerium that contribute primarily to the low-frequency region show a less localized behavior, whereas the acoustic-like and optic-like modes separate at a much smaller frequency.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structure and vibrations of cerium in silica glass from molecular dynamics simulations

et al. 2020

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“…Up to now, some silicate glasses have been developed for radiation detector applications, and they exhibit attractive detector properties. (27)(28)(29)(30)(31)(32) Therefore, in this study, we focused on SiO 2 and Gd 2 O 3 as the main components of a host and Ce 3+ as the luminescence center and investigated Ce-doped 20BaO-15Gd 2 O 3 -65SiO 2 glasses for scintillator applications.…”

Section: Introductionmentioning

confidence: 99%

X-ray-Induced Scintillation via Energy Transfer of Gd3+ and Ce3+ in Silicate Glasses Composed of Heavy Elements

Shiratori¹,

Nakauchi²,

Kato³

et al. 2020

Sensors and Materials

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Photoluminescence and X-ray-induced scintillation properties of xCe:20BaO-15Gd 2 O 3-65SiO 2 (x = 0, 0.01, 0.05, 0.1, 0.5) glasses were investigated. The glass samples emitted light via energy transfer from Gd 3+ in the host to Ce 3+. The 6 P 7/2-8 S 7/2 relaxation of Gd 3+ was confirmed notably in the undoped glass sample, but the emission due to Gd 3+ disappeared upon the addition of Ce. Furthermore, the decay time constant of Gd 3+ decreased with increasing Ce concentration.

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“…The absorption peak of Ce-doped and Ag,Ce-codoped PF and PS glasses at ∼350 nm (Figure S6a,b) is due to the 4f → 5d electronic transitions of Ce 3+ ions in phosphate glasses. 60,61 The addition of fluoride in Ce-doped phosphate glass caused a blue shift of the cutoff wavelength from 399 to 392 nm. The addition of sulfate in Ce-doped phosphate glass has a lower influence on the shift of the cutoff wavelength: with increasing sulfate content, the cutoff wavelength shifted from 390 to 385 nm.…”

Section: Resultsmentioning

confidence: 99%

Role of Ag⁺ Ions in Determining Ce³⁺ Optical Properties in Fluorophosphate and Sulfophosphate Glasses

et al. 2021

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Understanding the interactions among dopant species and the role of the host lattice is of fundamental importance for the chemical formulation of optically active glasses. Here, we consider the archetypal dopant pair of Ag–Ce in complex fluorophosphate (PF) and sulfophosphate (PS) matrices, in which variable bonding environments and ligand selectivity exert distinct effects on dopant properties. The addition of Ag+ to PF glasses blue-shifts the ultraviolet (UV) cutoff wavelength of Ce3+ and enhances its photoluminescence (PL) intensity. In PS matrices, the exact opposite effect is observed: red-shifting the UV cutoff and lowering the PL intensity. No Ag–Ag pairs or cluster species were found in either matrix material; however, in PS, such clustering could be triggered by secondary broad-band UV–visible irradiation. The optical properties of Ag–Ce-codoped glasses are a result of the ionocovalent character of the Ag+–O–Ce3+ bond, the cross-relaxation process between Ag+ and Ce3+, and the redox ratio of Ce3+/Ce4+. In the PF glasses, the enhancement of the Ce3+ PL intensity is due to energy transfer from Ag+ to Ce3+ and a redox shift from Ce4+ to Ce3+. The more covalent Ag+–O–Ce3+ interactions in the PS series decrease the Ce3+/Ce4+ ratio. Moreover, photoinduced Ag clustering is facilitated in the more covalent environment, which indicates that glasses commonly used for Ag nanoparticle formation, such as silicate glasses, also possess more covalent Ag+–O bonding.

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Radiation induced luminescence properties of Ce-doped Y2O3-Al2O3-SiO2 glass prepared using floating zone furnace

Cited by 19 publications

References 30 publications

Structure and vibrations of cerium in silica glass from molecular dynamics simulations

Structure and vibrations of cerium in silica glass from molecular dynamics simulations

X-ray-Induced Scintillation via Energy Transfer of Gd3+ and Ce3+ in Silicate Glasses Composed of Heavy Elements

Role of Ag⁺ Ions in Determining Ce³⁺ Optical Properties in Fluorophosphate and Sulfophosphate Glasses

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Radiation induced luminescence properties of Ce-doped Y2O3-Al2O3-SiO2 glass prepared using floating zone furnace

Cited by 19 publications

References 30 publications

Structure and vibrations of cerium in silica glass from molecular dynamics simulations

Structure and vibrations of cerium in silica glass from molecular dynamics simulations

X-ray-Induced Scintillation via Energy Transfer of Gd3+ and Ce3+ in Silicate Glasses Composed of Heavy Elements

Role of Ag+ Ions in Determining Ce3+ Optical Properties in Fluorophosphate and Sulfophosphate Glasses

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Role of Ag⁺ Ions in Determining Ce³⁺ Optical Properties in Fluorophosphate and Sulfophosphate Glasses