26 Result(s)
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Takumi Kato
Materials Science
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Article
Scintillation and photoluminescence properties of Al(DMSO)6SbCl6 and Ga(DMSO)6SbCl6 single crystals with zero-dimensional structures
Al(DMSO)6SbCl6 and Ga(DMSO)6SbCl6 single crystals were synthesized by the solvent evaporation method and their optical and scintillation properties were investigated. Broad photoluminescence (PL) and scintillatio...
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Article
Dosimetric properties of Dy-doped Ba3Y(PO4)3 single crystals
Dy-doped Ba3Y(PO4)3 single crystals were grown by the floating zone (FZ) method, and the photoluminescence (PL) and thermally stimulated luminescence (TSL) properties were evaluated. The highest PL quantum yield ...
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Article
Optical and scintillation characteristics of organic–inorganic layered compounds with a linear alkyl diamine
We prepared organic–inorganic layered perovskite-type compounds having a linear alkyl diamine (NH3CnH2nNH3)PbCl4 (n = 6: (1, 6-DHX)PbCl4, n = 7: (1,7-DHP)PbCl4, n = 8: (1,8-DIO)PbCl4, n = 9: (1,9-DIN)PbCl4, n = 1...
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Article
Enhancement of photoluminescence and dosimetric properties of Tb-doped CaYAlO4 single crystals by reduction annealing effects
Tb-doped CaYAlO4 crystals were grown by the floating zone method, and then the samples were annealed under reduction condition to remove extra oxygen in CaYAlO4. Under excitation at 250 nm, multiple photoluminesc...
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Article
Dosimetric properties of Dy-doped Na3AlF6 ceramics synthesized by spark plasma sintering method
0.1, 1.0, 3.0, and 5.0% Dy-doped Na3AlF6 ceramics were synthesized by the spark plasma sintering method, and optically stimulated luminescence (OSL) and thermally stimulated luminescence (TSL) properties were inv...
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Article
Radio-photoluminescence phenomenon in Ag-doped Cs2O–MgO–Al2O3–P2O5 glasses
In this study, we successfully made Ag2O–Cs2O–MgO–Al2O3–P2O5 glasses with different Ag concentrations (0, 0.1, 0.3, 1.0, and 3.0 mol.%) by the melt-quenching method. We measured photoluminescence (PL) properties,...
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Article
Suppression of afterglow in RbI:Tl scintillator by co-do**
RbI:Tl and RbI:Tl co-doped with Sb, Bi, Sm, and Yb were prepared using the vertical Bridgman–Stockbarger technique, and the effects by co-do** on photoluminescence (PL) and scintillation properties were rese...
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Article
Dosimetric and scintillation properties of Tm-doped BaF2 translucent ceramics
BaF2 translucent ceramics with various amounts of TmF3 (0.01%, 0.1% and 1%) were fabricated, and their scintillation and thermally-stimulated luminescence (TSL) characteristics were evaluated. The Tm-doped BaF2 t...
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Article
Tl-concentration dependence of photoluminescence and scintillation properties in Tl-doped RbI single crystals
Photoluminescence and scintillation properties of RbI single crystals with various Tl-concentrations (0.1%, 0.3%, 1%, and 3%) were investigated. Under an excitation at ~ 300 nm, all the samples exhibit an emis...
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Article
Photoluminescence and scintillation properties of Eu2O3–BaO–Nb2O5–TeO2 glass and glass ceramics
1Eu2O3–3BaO–20Nb2O5–76TeO2 glass and the corresponding glass-ceramics were synthesized with the aim to investigate the effect of glass crystallization on the photoluminescence and scintillation characteristics. G...
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Article
Photoluminescence, scintillation, and dosimetric properties of Tb-doped Mg2SiO4 single crystals
Tb-doped Mg2SiO4 single crystals were grown by floating zone method, and photoluminescence (PL), scintillation, and thermally stimulated luminescence (TSL) properties were evaluated. In the PL and scintillation p...
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Article
Optical and scintillation properties of ZnO translucent ceramics annealed at different temperatures
ZnO translucent ceramics were synthesized by spark plasma sintering. To improve photoluminescence (PL) and scintillation properties caused by mainly oxygen vacancies in addition to some kinds of other defects,...
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Article
Radiation-induced luminescence properties of Ce–doped Mg2SiO4 single crystals
We evaluated the photoluminescence (PL), scintillation, and dosimetric properties of Ce–doped Mg2SiO4 single crystals. As the PL and optically-stimulated luminescence (OSL) properties, the Ce–doped Mg2SiO4 showed...
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Article
Characterization of scintillation properties of Nd-doped Bi4Ge3O12 single crystals with near-infrared luminescence
We synthesized the Nd-doped Bi4Ge3O12 (BGO) single crystals with different concentrations of Nd (0.1, 0.5, and 1%) by the floating zone method and evaluated the photoluminescence (PL) and scintillation properties...
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Article
Scintillation properties of Mn-doped methylammonium lead chloride crystals
Organic–inorganic perovskite materials with a bulk structure MAPbX3 (MA: methylamine, X: halogen) have attracted much attention in various applications such as solar cells, photodiodes, and radiation detectors. H...
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Article
Evaluation of photoluminescence and scintillation properties of Eu‐doped 20CsCl–20BaCl2–60ZnCl2 glasses by a melt quenching method
Photoluminescence and scintillation properties of undoped and Eu-doped 20CsCl–20BaCl2–60ZnCl2 (CBZ) glasses were investigated. The Eu-doped CBZ glasses indicated photoluminescence and scintillation with two emiss...
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Article
Influence of Yb do** on optical and upconversion photoluminescence properties of Yb-, Er-co-doped Y2O3 transparent ceramics prepared by SPS
x% Yb-, 0.5% Er-co-doped Y2O3 transparent ceramics (x = 0, 0.1, 0.5, 1.0, 5.0 and 10) were prepared by the spark plasma sintering, and then we evaluated the effect of Yb do** on optical and upconversion (UC) ph...
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Article
Photoluminescence and scintillation properties of (C6H5C2H4NH3)2Pb1−xZnxBr4 as a two-dimensional quantum-confined scintillator
(C6H5C2H4NH3)2Pb1−xZnxBr4 (x = 0.05, 0.1, and 0.25) single crystals were fabricated as a two-dimensional quantum-confined scintillator by the poor-solvent diffusion method. In the photoluminescence (PL) emission ...
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Article
Concentration dependence of dosimetric properties in Ce-doped silicate glasses synthesized by the spark plasma sintering method
We synthesized SiO2 glasses doped with various concentrations of Ce by the spark plasma sintering (SPS) method, and evaluated optical, scintillation, and dosimetric properties. The Ce-doped specimens showed photo...
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Article
Evaluation of dosimetric properties of Li-codoped MgF2:Tb ceramics
Li-codoped MgF2:Tb ceramics with different Li concentrations (0.01, 0.1, 1, and 3 mol%) were prepared by the spark plasma sintering method, and photoluminescence (PL), scintillation, and dosimetric properties wer...
