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Materials (Basel). 2013 Dec 31;7(1):157-169. doi: 10.3390/ma7010157.

Lu₂O₃:Pr,Hf Storage Phosphor: Compositional and Technological Issues.

Author information

1
Faculty of Chemistry, University of Wroclaw, 14 F. Joliot-Curie Street, Wroclaw 50-383, Poland. aneta.wiatrowska@philips.com.
2
Faculty of Chemistry, University of Wroclaw, 14 F. Joliot-Curie Street, Wroclaw 50-383, Poland. eugeniusz.zych@chem.uni.wroc.pl.

Abstract

Lu₂O₃:Pr,Hf ceramics were investigated using mainly thermoluminescence (TL) technique. Their ability to efficiently store energy acquired upon irradiation with X-rays was proven. The best TL performance was achieved for compositions containing 0.025%-0.05% of Pr and about 0.1% of Hf. Further enhancement of TL efficiency was attained by increasing the temperature of sintering of the ceramics up to 1700 °C and applying reducing atmosphere of forming gas. It was also proven that fast cooling after the sintering at 1700 °C significantly enhanced the storage phosphor performance. TL glow curve contained three components peaking around 130, 250 and 350 °C. Among them, the one at 250 °C contributed the most to the total TL.

KEYWORDS:

Lu2O3:Pr,Hf ceramics; energy traps; storage phosphors; thermoluminescence

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