pp. 611-618
S&M2833 Research Paper of Special Issue https://doi.org/10.18494/SAM3696 Published: February 21, 2022 Photoluminescence and Scintillation Properties of Ce-, Pr-, and Tb-doped (Gd,Lu)2Hf2O7 Crystals [PDF] Daisuke Nakauchi, Hiroyuki Fukushima, Takumi Kato, Noriaki Kawaguchi, and Takayuki Yanagida (Received October 15, 2021; Accepted November 5, 2021) Keywords: scintillator, photoluminescence, radioluminescence, phosphor, dosimetry
Gd2Hf2O7 and Lu2Hf2O7 single crystals doped with various rare-earth ions (Ce3+, Pr3+, and Tb3+) were prepared by the floating zone method to investigate their photoluminescence and scintillation properties. The Ce-doped samples show scintillation signals with a broad peak in the range of 400–600 nm, whereas the Tb- and Pr-doped samples show relatively strong emission characterized by a few sharp peaks in the range of 480–700 nm due to 4f–4f transitions of the dopant ions. The scintillation spectra of the Ce-doped Lu2Hf2O7 after annealing at various temperatures show significant changes in their shapes, suggesting changes in the valence of the Ce ions.
Corresponding author: Daisuke NakauchiThis work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Daisuke Nakauchi, Hiroyuki Fukushima, Takumi Kato, Noriaki Kawaguchi, and Takayuki Yanagida, Photoluminescence and Scintillation Properties of Ce-, Pr-, and Tb-doped (Gd,Lu)2Hf2O7 Crystals, Sens. Mater., Vol. 34, No. 2, 2022, p. 611-618. |