TY - JOUR
T1 - Properties of optically and thermally stimulated luminescence of novel storage phosphor materials
T2 - Doped and undoped CsCaCl3 ceramics
AU - Noda, Sayaka
AU - Koshimizu, Masanori
AU - Fujimoto, Yutaka
AU - Okada, Go
AU - Saeki, Keiichiro
AU - Yanagida, Takayuki
AU - Asai, Keisuke
N1 - Publisher Copyright:
© 2017 The Ceramic Society of Japan. All rights reserved.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2017/10
Y1 - 2017/10
N2 - We report the properties of CsCaCl3, storage phosphors doped with Eu, Ce, or Cu. Both doped and undoped CsCaCl3 samples were synthesized as ceramics. For undoped CsCaCl3, thermally stimulated luminescence (TSL) spectrum showed a broad band around 360390 nm, and optically stimulated luminescence (OSL) spectrum exhibited the same band with a shoulder near 320 nm. These bands were attributed to different kinds of defects or impurities. The OSL and TSL spectra of Eu-doped CsCaCl3 showed a band around 440 nm arising from the 5d4f transition of Eu2+. The Ce-doped CsCaCl3 showed the OSL and TSL bands originating from the 5d4f transition of Ce3+. An intense band at 345 nm appeared in the OSL spectrum of Cu-doped CsCaCl3 due to Cu+, and an additional peak at 430 nm was ascribed to Cu+ ion perturbed by OH1 ion. On the other hand, the TSL spectrum of Cu-doped CsCaCl3 had a peak around 470 nm and it was assigned to Cu2+. The TSL glow curves of the undoped, Eu-doped, Ce-doped, and Cu-doped CsCaCl3 were different from each other. This suggested that the dopant ions influenced the trapping process of electronhole pairs, which were formed upon irradiation.
AB - We report the properties of CsCaCl3, storage phosphors doped with Eu, Ce, or Cu. Both doped and undoped CsCaCl3 samples were synthesized as ceramics. For undoped CsCaCl3, thermally stimulated luminescence (TSL) spectrum showed a broad band around 360390 nm, and optically stimulated luminescence (OSL) spectrum exhibited the same band with a shoulder near 320 nm. These bands were attributed to different kinds of defects or impurities. The OSL and TSL spectra of Eu-doped CsCaCl3 showed a band around 440 nm arising from the 5d4f transition of Eu2+. The Ce-doped CsCaCl3 showed the OSL and TSL bands originating from the 5d4f transition of Ce3+. An intense band at 345 nm appeared in the OSL spectrum of Cu-doped CsCaCl3 due to Cu+, and an additional peak at 430 nm was ascribed to Cu+ ion perturbed by OH1 ion. On the other hand, the TSL spectrum of Cu-doped CsCaCl3 had a peak around 470 nm and it was assigned to Cu2+. The TSL glow curves of the undoped, Eu-doped, Ce-doped, and Cu-doped CsCaCl3 were different from each other. This suggested that the dopant ions influenced the trapping process of electronhole pairs, which were formed upon irradiation.
KW - Cesium calcium tri-chloride
KW - CsCaCl3
KW - Optically stimulated luminescence
KW - Photoluminescence
KW - Storage phosphor
KW - TSL glow curve
KW - Thermally stimulated luminescence
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U2 - 10.2109/jcersj2.17074
DO - 10.2109/jcersj2.17074
M3 - Article
AN - SCOPUS:85030571327
VL - 125
SP - 713
EP - 716
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 10
ER -