High Charge Carrier Storage Capacity in Lithium Lutetium Silicate Doped with Cerium and Thulium
It is demonstrate that LiLuSiO4:Ce,Tm has excellent charge carrier storage properties. Comparative studies are performed with the state‐of‐the art X‐ray storage phosphor BaFBr(I):Eu. The thermoluminescence (TL) intensity of the optimized LiLuSiO4:Ce,Tm is four times higher than the TL of BaFBr(I):Eu...
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Veröffentlicht in: | Physica status solidi. PSS-RRL. Rapid research letters 2019-03, Vol.13 (3), p.n/a |
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Sprache: | eng |
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Zusammenfassung: | It is demonstrate that LiLuSiO4:Ce,Tm has excellent charge carrier storage properties. Comparative studies are performed with the state‐of‐the art X‐ray storage phosphor BaFBr(I):Eu. The thermoluminescence (TL) intensity of the optimized LiLuSiO4:Ce,Tm is four times higher than the TL of BaFBr(I):Eu. After 3 h of storage at room temperature (RT) there is still 94% of initial thermoluminescence and only 48% for BaFBr(I):Eu which demonstrates insignificant thermal fading. The signal can be read out by a blue LED and less efficiently by a red laser. It does require higher stimulation energy than in the case of BaFBr(I):Eu. The self‐irradiation with a dose rate of 13 µGy h−1 due to 176Lu isotopes is not a serious drawback for application.
It is shown that LiLuSiO4:Ce,Tm has excellent charge carrier storage properties. The thermoluminescence (TL) intensity is four times higher than TL of the state‐of‐the art X‐ray storage phosphor BaFBr(I):Eu. Fading is insignificant, as TL signal intensity drops only to 94% for LiLuSiO4:Ce,Tm compare to 48% for BaFBr(I):Eu after 3 h storage. |
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ISSN: | 1862-6254 1862-6270 |
DOI: | 10.1002/pssr.201800502 |