Scintillator application of CsPbBr3 quantum dots-embedded SiO2 glasses

CsPbBr3 quantum dots-embedded SiO2 glasses were synthesized by the spark plasma sintering method as novel scintillators for γ-ray detectors. Their optical and scintillation properties were investigated to examine the scintillation performance. The X-ray diffraction patterns observed a halo peak of t...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2024-09, Vol.63 (9), p.092001
Main Authors: Kato, Takumi, Shiratori, Daiki, Watanabe, Akito, Fujimoto, Yutaka, Asai, Keisuke, Nishikawa, Akihiro, Okazaki, Kai, Nakauchi, Daisuke, Kawaguchi, Noriaki, Yanagida, Takayuki
Format: Article
Language:English
Subjects:
Cesium 137
Cesium isotopes
Diffraction patterns
Emission spectra
Glass
ionising radiation
Optical properties
Photoluminescence
Quantum dots
radiation detector
Scintillation
Scintillation counters
Silicon dioxide
Spark plasma sintering
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Summary:CsPbBr3 quantum dots-embedded SiO2 glasses were synthesized by the spark plasma sintering method as novel scintillators for γ-ray detectors. Their optical and scintillation properties were investigated to examine the scintillation performance. The X-ray diffraction patterns observed a halo peak of the SiO2 glass phase and diffraction peaks of CsPbBr3. An emission peak due to CsPbBr3 quantum dots was detected at around 515 nm in both photoluminescence (PL) and scintillation spectra. The PL and scintillation decay time curves included a component of nanosecond order, resulting from CsPbBr3 quantum dots. Under γ-ray irradiation from 137Cs, the light yield (LY) of the 0.2% CsPbBr3-embedded SiO2 glass was 150 photons MeV−1.
ISSN:0021-4922
1347-4065
DOI:10.35848/1347-4065/ad6dc1