Article High performance Y1-xTbxTaO4 single-crystal scintillators for X-ray detection

Yueshen Zhou SAMURAI ORCID (Research Center for Electronic and Optical Materials/Optical Materials Field/Optical Single Crystals Group, National Institute for Materials ScienceROR) ; Dongsheng Yuan SAMURAI ORCID (Research Center for Electronic and Optical Materials/Optical Materials Field/Optical Single Crystals Group, National Institute for Materials ScienceROR) ; Encarnación G. Víllora SAMURAI ORCID (Research Center for Electronic and Optical Materials/Optical Materials Field/Optical Single Crystals Group, National Institute for Materials ScienceROR) ; Takumi Kato (Nara Institute of Science and Technology) ; Daisuke Nakauchi (Nara Institute of Science and Technology) ; Noriaki Kawaguchi (Nara Institute of Science and Technology) ; Takayuki Yanagida (Nara Institute of Science and Technology) ; Kiyoshi Shimamura SAMURAI ORCID (Research Center for Electronic and Optical Materials/Optical Materials Field/Optical Single Crystals Group, National Institute for Materials ScienceROR)

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Yueshen Zhou, Dongsheng Yuan, Encarnación G. Víllora, Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida, Kiyoshi Shimamura. High performance Y1-xTbxTaO4 single-crystal scintillators for X-ray detection. CRYSTAL GROWTH & DESIGN. 2025, 25 (2), 359-366. https://doi.org/10.1021/acs.cgd.4c01391

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(abstract)

In pursuit of a single-crystal scintillator that is free from toxic elements and has scintillation properties comparable to com-mercial CdWO4 in terms of light yield, afterglow, and stopping power, transparent and colorless Y1-xTbxTaO4 mixed single crystals are grown by the floating-zone technique and investigated for the first time as scintillators. With the substitution of Y3+ by Tb3+, the intrinsic UV photoluminescence from YTaO4, stemming from the Ta-O complex, gradually decreases till only the intraionic Tb3+ emissions remain for a Tb concentration below 5%. The optimum scintillation performance is found for 15% Tb concentration: the light yield is ~ 1.5 times that of CdWO4, while the density, the stopping power, and the after-glow are comparable. For concentrations above 15% Tb3+, the quadrupole-quadrupole interaction is found to be responsible for the concentration quenching. These results demonstrate the potential of Y0.85Tb0.15TaO4 single crystals as an environmen-tally friendly alternative to CdWO4

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  • In Copyright

    This document is the Accepted Manuscript version of a Published Work that appeared in final form in Crystal Growth & Design, copyright © 2024 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.cgd.4c01391.

Keyword: Single crystals, Y1-xTbxTaO4, Scintillator

Date published: 2025-01-15

Publisher: American Chemical Society

Journal:

  • CRYSTAL GROWTH & DESIGN (ISSN: 15287483) vol. 25 issue. 2 p. 359-366

Funding:

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5279

First published URL: https://doi.org/10.1021/acs.cgd.4c01391

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Updated at: 2025-01-16 13:20:07 +0900

Published on MDR: 2025-12-23 08:21:51 +0900

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