Ultrafast Transparent Ceramic Scintillators Using the Yb$^{3+}$ Charge Transfer Luminescence in RE$_{2}$O$_{3}$ Host

Yanagida, Takayuki; Fujimoto, Yutaka; Kurosawa, Shunsuke; Watanabe, K.; Yagi, Hideki; Yanagitani, Takahiko; Jarý, V.; Futami, Yoshisuke; Yokota, Yuui; Yoshikawa, Akira; Uritani, Akira; Iguchi, Tetsuo; Nikl, M.

doi:10.1143/apex.4.126402

Cited by 29 publications

(11 citation statements)

References 26 publications

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“…Although the origin of the emission was unclear, if the emission is caused by a contamination of transitional metals or rare-earth ions, some specific emission lines should be observed, and in most cases, the decay time should be slower except for the Yb 3+ charge transfer emission. (25) The other possibility is natural oxidation of the surface of the sample. However, 500 nm luminescence was not reported in MgO, B 2 O 3 , or complex materials of Mg and B [e.g., Mg 3 (BO 3 ) 2 ].…”

Section: Resultsmentioning

confidence: 99%

Optical, Dosimeter, and Scintillation Properties of MgB2

2016

Sensors and Materials

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The optical, dosimeter, and scintillation properties of MgB 2 were investigated for the first time. MgB 2 was visibly black and showed 0.1-0.2% optical transmittance of wavelengths longer than 200 nm. Under 280 nm excitation, an intense luminescence peak appeared around 500 nm with a fast decay time of 8.8 ns. The temperature dependence of photoluminescence was examined in the range from 5 to 290 K, and the 500 nm band disappeared at low temperatures. To evaluate dosimeter properties, the thermally stimulated luminescence (TSL) glow curve and the linearity between the TSL intensity and the X-ray irradiation dose were examined. As a result, MgB 2 was found to exhibit good dosimeter properties. Finally, as a scintillation response, the X-ray-induced scintillation spectrum was evaluated and the emission peak at 470 nm was observed with a fast decay time of 11 ns.

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Section: Resultsmentioning

confidence: 99%

Optical, Dosimeter, and Scintillation Properties of MgB2

2016

Sensors and Materials

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“…149 Most of the lanthanide sesquioxides, as well as yttrium oxide and scandium oxide, can be fabricated into transparent ceramics. 145,[150][151][152][153][154][155][156][157] These transparent sesquioxide ceramics can act as a host material and can be doped with many luminescent ions, such as Nd 3+ , Tb 3+ , Dy 3+ , Ho 3+ , Er 3+ , Tm 3+ , and Yb 3+ , for applications like solid-state lasers, 20,158,159 scintillators, 160,161 magnetooptical materials, 145,153 infrared detectors, optical imaging systems, 152 temperature sensors, 162 and so forth. Figure 18 also shows how solid solution and doping could be realized with almost any composition, leading to flexibility in designing transparent sesquioxide ceramics.…”

Section: Transparent Sesquioxide Ceramicsmentioning

confidence: 99%

High‐entropy transparent ceramics: Review of potential candidates and recently studied cases

Zhang

2021

Int J Applied Ceramic Tech

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High‐entropy ceramics have been widely explored and extensively studied since the first demonstration of the configuration entropy stabilized reversible transitions between multiple and single phases by Rost et al. in 2015. Most of the current research on high‐entropy ceramics has focused on properties like thermal conductivity, thermoelectricity, structures, and others. Some recent studies have extended the high‐entropy concept to the field of transparent ceramics. We reviewed these papers and proposed four potential ceramics groups for high‐entropy transparent ceramics including fluoride ceramics, fluorite‐deficient and/or ordered pyrochlore A2B2O7 ceramics, garnet ceramics, and sesquioxide ceramics. In this article, we review ceramic powder synthesis, the fabrication of transparent ceramics, high‐entropy ceramics, and limited cases of high‐entropy transparent ceramics for each category. High‐entropy transparent ceramics with diverse compositions and structures will provide more possibilities for functional transparent ceramics in the future.

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“…Moreover, some scintillators exhibit long scintillation components, which hinder their application in high counting-rate measurements. 5) The fast charge-transfer transition of Yb 3+ has been exploited as an alternative; 12) however, its scintillation light yield is less than 1000 photons MeV −1 because the scintillation decay is due to a fast nonradiative process. To achieve both fast scintillation decay and high scintillation light yield simultaneously, the use of organic molecules with fast fluorescence is advantageous.…”

Section: Introductionmentioning

confidence: 99%

Development of plastic scintillators loaded with perovskite quantum dots

Magi

Koshimizu

Satô

et al. 2022

Jpn. J. Appl. Phys.

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We developed plastic scintillators loaded with perovskite quantum dots (QDs) to enhance the detection efficiency for high-energy photons such as X-rays and gamma rays. QDs with different emission wavelengths were loaded onto plastic scintillators at 5 wt%. The emission from the QDs only was observed in the radioluminescence spectra under X-ray irradiation. The photoluminescence decay behavior indicates that the absorption of the QD emission by the QDs themselves (self-absorption) results in long decay components, which were also observed in the scintillation decay. The detection efficiency for 67.4 keV X-rays was successfully enhanced by loading, although the scintillation light yield was reduced.

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Ultrafast Transparent Ceramic Scintillators Using the Yb$^{3+}$ Charge Transfer Luminescence in RE$_{2}$O$_{3}$ Host

Cited by 29 publications

References 26 publications

Optical, Dosimeter, and Scintillation Properties of MgB2

Optical, Dosimeter, and Scintillation Properties of MgB2

High‐entropy transparent ceramics: Review of potential candidates and recently studied cases

Development of plastic scintillators loaded with perovskite quantum dots

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