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Materials 2014, 7(1), 157-169; doi:10.3390/ma7010157
Article

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

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Received: 3 November 2013 / Revised: 9 December 2013 / Accepted: 11 December 2013 / Published: 31 December 2013
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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; storage phosphors; thermoluminescence; energy traps Lu2O3:Pr,Hf ceramics; storage phosphors; thermoluminescence; energy traps
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Wiatrowska, A.; Zych, E. Lu2O3:Pr,Hf Storage Phosphor: Compositional and Technological Issues. Materials 2014, 7, 157-169.

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