Near-infrared emitting of zero-dimensional europium(II) halide scintillators: energy transfer engineering via Sm.sup.2+./sup. doping

0577794 - FZÚ 2024 RIV US eng J - Článek v odborném periodiku
Wen, X.M. - Průša, Petr - Linhart, V. - Parkman, T. - Vaněček, Vojtěch - Pánek, D. - Nikl, Martin - Cheng, S.L. - Wang, Q. - Ren, G.H. - Wu, Y.T.
Near-infrared emitting of zero-dimensional europium(II) halide scintillators: energy transfer engineering via Sm²⁺ doping.
ACS Applied Electronic Materials. Roč. 5, č. 6 (2023), s. 3507-3514. E-ISSN 2637-6113
Grant CEP: GA MŠMT(CZ) EF16_019/0000760
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: near-infrared emitting * energy transfer * single crystals * scintillators * metal halides
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 4.7, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1021/acsaelm.3c00534

Near-infrared (NIR)-emitting scintillators, coupled with high quantum efficiency silicon-based photodetectors, have emerged as a promising solution for highly efficient radiation detection applications. In this work, we developed NIR-emitting zero-dimensional Cs4EuBr6 halide scintillators via Sm2+ doping. Single crystals of Cs4EuBr6 with varying Sm2+ concentrations were grown by the vertical Bridgman method. Under X-ray irradiation, the scintillation emission of highly Sm-doped Cs4EuBr6 single crystals is dominated by the Sm2+ 5d–4f emission peaking at 831 nm with a weak Eu2+ 5d–4f emission peaking at 443 nm. The energy transfer processes between Eu2+ and Sm2+ were investigated by using photoluminescence (PL) spectra, PL decay kinetics, and soft X-ray excited decay kinetics measurements. Furthermore, we evaluated the gamma spectroscopy response of Cs4EuBr6:Sm single crystals using an avalanche photodiode detector known for its high sensitivity in the NIR wavelength region.
Trvalý link: https://hdl.handle.net/11104/0346891