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Vol. 34, No. 8(3), S&M3042

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Sensors and Materials
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Sensors and Materials, Volume 36, Number 2(2) (2024)
Copyright(C) MYU K.K.
pp. 481-488
S&M3535 Research Paper of Special Issue
https://doi.org/10.18494/SAM4763
Published: February 20, 2024

Photoluminescence, Scintillation, and Thermally Stimulated Luminescence Properties of Eu-doped Al2O3 Single Crystals [PDF]

Ren Tsubouchi, Hiroyuki Fukushima, Takumi Kato, Daisuke Nakauchi, Satoshi Saijo, Toru Matsuura, Noriaki Kawaguchi, Tomoaki Yoneda, and Takayuki Yanagida

(Received October 31, 2023; Accepted January 22, 2024)

Keywords: photoluminescence, scintillation, TSL, single crystal, floating zone

The photoluminescence (PL), scintillation, and thermally stimulated luminescence (TSL) properties of Eu-doped (0.01, 0.1, and 1%) Al2O3 single crystals grown by the floating zone method were investigated systematically. The PL of the samples showed several sharp emission peaks across 550–750 nm originating from the 4f–4f transitions of Eu3+ and the 3d–3d transitions of Cr3+ impurity ions. The scintillation spectrum of the samples showed a broad emission peak at 320 nm due to the F+ center and an emission peak at 700 nm due to the 3d–3d transitions of Cr3+ impurity ions. All the samples showed TSL glow peaks at around 200, 320, and 375 °C. The TSL intensity of the 1% Eu-doped sample was the highest among the present three samples, and the TSL response was proportional to the irradiated X-ray dose in the range from 10 to 1000 mGy. The Eu-doped Al2O3 single crystal could be a novel candidate for personal dose monitoring applications.

Corresponding author: Takayuki Yanagida


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Cite this article
Ren Tsubouchi, Hiroyuki Fukushima, Takumi Kato, Daisuke Nakauchi, Satoshi Saijo, Toru Matsuura, Noriaki Kawaguchi, Tomoaki Yoneda, and Takayuki Yanagida, Photoluminescence, Scintillation, and Thermally Stimulated Luminescence Properties of Eu-doped Al2O3 Single Crystals, Sens. Mater., Vol. 36, No. 2, 2024, p. 481-488.



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