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Sensors and Materials, Volume 37, Number 2(1) (2025)
Copyright(C) MYU K.K.
pp. 539-546
S&M3930 Research Paper of Special Issue
https://doi.org/10.18494/SAM5448
Published: February 7, 2025

Development of Eu-doped Gd3Al3Ga2O12 Nanoparticles for In vivo Applications [PDF]

Masanori Koshimizu, Kazuki Tanahashi, Yutaka Fujimoto, and Keisuke Asai

(Received November 5, 2024; Accepted December 16, 2024)

Keywords: scintillator, nanoparticle, garnet, in vivo

Red-emitting scintillator nanoparticles based on Eu-doped Gd3Al3Ga2O12 were developed. Nanoparticles of 100–300 nm size were successfully obtained. The photoluminescence (PL) and X-ray-induced radioluminescence spectra had sharp peaks in the wavelength region of 590–820 nm, which are attributed to the 4f–4f transitions of Eu3+ ions. The Eu concentration dependence of the emission properties was investigated. The PL quantum yield was the highest (98.4%) for the Eu concentration of 5% with respect to (Gd + Eu). Judged from the high PL quantum yield and radioluminescence in the red wavelength region, the development of the red-emitting nanoparticle scintillators was successful.

Corresponding author: Masanori Koshimizu


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Cite this article
Masanori Koshimizu, Kazuki Tanahashi, Yutaka Fujimoto, and Keisuke Asai, Development of Eu-doped Gd3Al3Ga2O12 Nanoparticles for In vivo Applications, Sens. Mater., Vol. 37, No. 2, 2025, p. 539-546.

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