Photoluminescence and X-ray induced scintillation in Gd3+-modified fluorophosphate glasses doped with Ce3+

Galleani, Gustavo; Lodi, Thiago A.; Mastelaro, Valmor Roberto; Jacobsohn, L.G.; Camargo, Andréa Simone Stucchi de

doi:10.1016/j.optmat.2022.112934

Cited by 7 publications

(3 citation statements)

References 38 publications

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“…The integrated brightness of [Cs 6 Cl]NaGa 6 S 12 :Mn 2+ 0.01 and [Cs 6 Cl]NaGa 6 S 12 :Mn 2+ 0.13 , was estimated to be 22% and 9%, respectively, that of a commercial scintillator, bismuth germanium oxide (BGO). The higher Mn content resulted in a decrease in the material’s scintillation, presumably due to concentration quenching. ,, In the future, efficiency improvements can be explored by optimizing Mn concentration in [Cs 6 X ]NaGa 6 S 12 :Mn 2+ since a clear dependence on the Mn content was observed (Figure a). Sulfur-based materials, compared to oxides, are thought to have better attenuation length characteristics for scintillators due to the higher atomic number of S and, thus, a larger number of electrons, highlighting the potential to develop novel scintillating SIC materials. − …”

Section: Resultsmentioning

confidence: 99%

Tunable Salt-Inclusion Chalcogenides for Ion Exchange, Photoluminescence, and Scintillation

et al. 2023

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Salt-inclusion chalcogenides (SICs) consisting of covalent and ionic building blocks have emerged as functional materials exhibiting novel topologies that result from the combination of the chalcogenide-based frameworks and the salt inclusions contained within them. Nine compositions of a novel family of SICs [Cs6 X]AGa6 Q 12 (A = Na, K, and Rb; X = F, Cl, and Br; Q = S and Se) were synthesized via halide/polychalcogenide flux crystal growth and structurally characterized. Ex situ powder X-ray diffraction analysis was used to determine the optimal synthesis temperatures at which the titled SIC materials crystallized in the flux. Density functional theory calculations coupled with convex hull construction were performed to predict the stability of [Cs6 X]AGa6 Q 12 compositions as a function of X, A, and Q and to identify their decomposition pathways. A combination of single-crystal X-ray diffraction and energy-dispersive spectroscopy was used to study single-crystal-to-single-crystal (SC-SC) ion-exchange-reaction, a process that also allowed for the synthesis of two additional members of this family, [Cs6F]NaGa6S12 and [Cs6–x Rb x Br]RbGa6S12, which did not form during the direct flux crystal growth. Furthermore, single crystals of [Cs6 X]AGa6 Q 12:Mn2+ were obtained through direct flux crystal growth and SC-SC ion-exchange reactions and studied for their photoluminescent behavior using individual single crystals. The emission profile changed as a function of Mn2+-content, the A cation identity, and the synthesis method used. Finally, radioluminescence measurements were carried out on [Cs6Cl]NaGa6S12:Mn2+ bulk samples, resulting in bright orange scintillation.

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Section: Resultsmentioning

confidence: 99%

Tunable Salt-Inclusion Chalcogenides for Ion Exchange, Photoluminescence, and Scintillation

et al. 2023

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“…(a) Melting points of some polychalcogenide fluxes. − K–S phase diagram for (b) 0–100 and (c) 55–80 S atom %. Phase diagrams are reprinted with permission from ref .…”

Section: Exploratory Flux Crystal Growth Of Chalcogenides Materialsmentioning

confidence: 99%

Advances in Chalcogenide Crystal Growth: Flux and Solution Syntheses, and Approaches for Postsynthetic Modifications

Berseneva

Loye

2023

Crystal Growth & Design

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Chalcogenide-containing materials are important for the semiconductor and thermoelectric industries and are up-and-coming materials for superconductors, catalysis, and battery applications. Challenges in the synthesis of those materials emerge from the chalcogen’s volatility and from the tendencies of chalcogenide materials to react with even trace quantities of oxygen. Nonetheless, many techniques have been applied to the growth of chalcogenide single crystals, which are convenient for structure determinations and intrinsic property measurements. In the current perspective, we highlight flux crystal growth, solution syntheses, and a novel approach, single-crystal-to-single-crystal modifications, as convenient routes for the preparation of single-crystal chalcogenide materials and emphasize recent advances in those synthetic techniques that have resulted in novel chalcogenide materials classes and that exhibit important properties.

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“…Therefore, many new scintillators have been developed continuously. Among them, glass scintillators stand out because of their high transmittance, strong plasticity, and diverse composition [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Photoluminescent and Scintillating Performance of Eu3+-Doped Boroaluminosilicate Glass Scintillators

Gong

Chen

et al. 2023

Materials

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In comparison with single crystal scintillators, glass scintillators are more promising materials for their benefits of easy preparation, low cost, controllable size, and large-scale manufacture. The emission of Eu3+ ion at 612 nm matches well with the photoelectric detector, making it suitable for the activator in glass scintillators. Therefore, the research on Eu3+ doped glass scintillators attract our attention. The photoluminescent and scintillating properties of Eu3+-activated boroaluminosilicate glass scintillators prepared by the conventional melt-quenching method were investigated in this work. The glass samples present good internal quantum yield. Under X-ray radiation, the optimal sample reveals high X-ray excited luminesce (XEL), and its integrated intensity of XEL is 22.7% of that of commercial crystal scintillator Bi4Ge3O12. Furthermore, the optimal specimen possesses a spatial resolution of 14 lp/mm in X-ray imaging. These results suggest that Eu3+-doped boroaluminosilicate glass is expected to be applied in X-ray imaging.

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Photoluminescence and X-ray induced scintillation in Gd3+-modified fluorophosphate glasses doped with Ce3+

Cited by 7 publications

References 38 publications

Tunable Salt-Inclusion Chalcogenides for Ion Exchange, Photoluminescence, and Scintillation

Tunable Salt-Inclusion Chalcogenides for Ion Exchange, Photoluminescence, and Scintillation

Advances in Chalcogenide Crystal Growth: Flux and Solution Syntheses, and Approaches for Postsynthetic Modifications

Photoluminescent and Scintillating Performance of Eu3+-Doped Boroaluminosilicate Glass Scintillators

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