Defect engineering in Mg2+ co-doped LuAG:Ce ceramics: Towards ultrahigh fast scintillation proportion

Authors

C. Hu, D. Zhu, Y. Wang, Z. Zhou, J. Ye, R. Kucerkova, A. Beitlerova, M. Nikl, J. Li

Laboratory / Department
Department of Optical Materials
DOI
10.26599/JAC.2025.9221148
Year
2025

Slow scintillation components due to charge carrier capture at defects are detrimental for material performance. Using the defect engineering strategy in advanced optical Lu3Al5O12:Ce,Mg ceramics, such processes are minimized and time response accelerated. The optimized 0.3 at% Mg2+-codoped ceramics shows the 0.5µs/10µs light yield’s ratio of 99.8%, which is the best value among the reported isostructural materials. We discuss the role of Mg2+ co-doping and pathways of performance optimization.

Na obrázku jsou leštěné keramické vzorky Lu3Al5O12:Ce,Mg materiálu s koncentracemi kodopantu Mg 0, 0.01, 0.03, 0.05, 0.1, and 0.3 at% a příklad scintilačního dosvitu při excitaci 137Cs radioisotopem (662keV).