Scintillator-oriented near-infrared emitting Cs.sub.4./sub.SrI.sub.6./sub.:Yb.sup.2+./sup., Sm.sup.2+./sup. single crystals via sensitization strategy

0575194 - FZÚ 2024 RIV US eng J - Journal Article
Wen, X. - Kučerková, Romana - Babin, Vladimir - Průša, Petr - Kotyková, M. - Nikl, Martin - Li, W. - Wang, Q. - Kurosawa, S. - Wu, Y.
Scintillator-oriented near-infrared emitting Cs₄SrI₆:Yb²⁺, Sm²⁺ single crystals via sensitization strategy.
Journal of the American Ceramic Society. Roč. 106, č. 11 (2023), s. 6762-6768. ISSN 0002-7820. E-ISSN 1551-2916
Institutional support: RVO:68378271
Keywords : energy transfer * metal halides * near-infrared emitting * scintillators * single crystals
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.9, year: 2022
Method of publishing: Limited access
https://doi.org/10.1111/jace.19302

In this study, a new Cs4SrI6:Yb2+,Sm2+ near-infrared (NIR) emitting scintillator was developed using sensitization strategy. It was found that Yb2+ sensitization significantly enhances the NIR radioluminescence (RL) of Sm2+, providing a new approach of designing highly emissive sensitized NIR scintillators. By studying the optical spectra and decay kinetics of Cs4SrI6:Yb2+,Sm2+, it was revealed that the energy transfer pathways involve both radiative and nonradiative processes. The gamma spectroscopy performance of Cs4SrI6:Yb2+,Sm2+ single crystals was studied by using the high-quantum-efficiency avalanche photodiode (APD) as the readout. Our results highlight the importance of using sensitization strategy of achieving NIR emitting scintillators and demonstrate the significant potential for radiation detection applications.
Permanent Link: https://hdl.handle.net/11104/0345028