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Abstract Y 3+ admixing Lu 3 Al 5 O 12 :Pr ceramics are fabricated successfully by the solid state reaction method and further optimized by an air-annealing process. Optical absorption,… Click to show full abstract
Abstract Y 3+ admixing Lu 3 Al 5 O 12 :Pr ceramics are fabricated successfully by the solid state reaction method and further optimized by an air-annealing process. Optical absorption, photoluminescence spectra and scintillation properties such as radioluminescence, and light output are measured and compared with those of the Y 3+ free LuAG:Pr ceramics. Positive effect of Y 3+ codopant consists mainly in the significant increase of scintillation light output, as well as the decrease of relative intensity of slow component. With 0.15% Pr 3+ codoping, the obtained LuYAG:Pr ceramic displays a light output of 28500 ph/MeV at 3 μs shaping time, higher than that of the LuAG:Pr ceramic scintillators ever report. The effect of Y 3+ admixture is further explained by vacuum ultraviolet and electron spin resonance experiment.
Journal Title: Optical Materials
Year Published: 2017
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