pp. 429-437
S&M3179 Research Paper of Special Issue https://doi.org/10.18494/SAM4139 Published: February 20, 2023 Photoluminescence and Scintillation Properties of Ce-doped (MgxCa1−x)HfO3 Single Crystals [PDF] Hiroyuki Fukushima, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, and Takayuki Yanagida (Received September 29, 2022; Accepted January 10, 2023) Keywords: scintillation, photoluminescence, single crystal, floating zone
Ce:(MgxCa1−x)HfO3 (x = 0.5, 2.5, 5, and 10%) single crystals were successfully grown by the floating zone method, and their photoluminescence (PL) and scintillation properties were investigated. A broad luminescence band with a maximum at 430 nm was observed in both the PL and scintillation spectra. The PL quantum yield (QY) improved with the substitution of Mg, and the PL QY of Ce:(MgxCa1−x)HfO3 reached 50%. Fast decay due to the 5d–4f transition of Ce3+ was observed for both the PL and scintillation. Ce:(MgxCa1−x)HfO3 (x = 5%) showed the highest light yield of ~9500 photons/MeV among the synthesized samples, and this value is higher than that of common X- and gamma-ray detection scintillators such as Bi4Ge3O12 and Ce:Gd2SiO5 single crystals.
Corresponding author: Hiroyuki FukushimaThis work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Hiroyuki Fukushima, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, and Takayuki Yanagida, Photoluminescence and Scintillation Properties of Ce-doped (MgxCa1−x)HfO3 Single Crystals, Sens. Mater., Vol. 35, No. 2, 2023, p. 429-437. |