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Vol. 32, No. 8(2), S&M2292

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Sensors and Materials, Volume 37, Number 2(1) (2025)
Copyright(C) MYU K.K.
pp. 569-574
S&M3935 Research Paper of Special Issue
https://doi.org/10.18494/SAM5429
Published: February 7, 2025

Thermally Stimulated Luminescence Properties of Dy-doped CaYAl3O7 Single Crystals [PDF]

Akihiro Nishikawa, Kensei Ichiba, Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, and Takayuki Yanagida

(Received October 29, 2024; Accepted December 17, 2024)

Keywords: single crystal, dosimeter, Dy

In this study, we prepared CaYAl3O7 single crystals doped with 0.1, 0.5, and 1.0% Dy by the floating zone method, and investigated their photoluminescence (PL) and thermally stimulated luminescence (TSL) properties. All samples showed the luminescence of Dy3+ at approximately 480, 570, 660, 750, and 830 nm in PL, and PL quantum yields (QYs) were 3.9–45%. TSL glow curve measurements showed peaks at about 70 and 250 ℃ for the 0.1 and 0.5% Dy-doped samples, while the 1.0% Dy-doped sample had a peak only at around 70 ℃. The 0.5% Dy-doped sample indicated the highest TSL intensity among all samples and linearity in the 1–1000 mGy range. The lower detection limit of the 0.5% Dy-doped sample was 1 mGy.

Corresponding author: Akihiro Nishikawa


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Cite this article
Akihiro Nishikawa, Kensei Ichiba, Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, and Takayuki Yanagida, Thermally Stimulated Luminescence Properties of Dy-doped CaYAl3O7 Single Crystals, Sens. Mater., Vol. 37, No. 2, 2025, p. 569-574.

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