Effect of reducing Lu³⁺ content on the fabrication and scintillation properties of non-stoichiometric Lu_3−xAl₅O₁₂:Ce ceramics

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• 作者：Shuping Liu^a ; ^b ; Jiri A. Mares^c ; Vladimir Babin^c ; Chen Hu^a ; Huamin Kou^a ; Carmelo D&rsquo ; Ambrosio^d ; Yubai Pan^e ; ^{ybpan@mail.sic.ac.cn} ; Martin Nikl^c ; ^nikl@fzu.cz
• 关键词：LuAG ; Ce ceramics ; Lu3+ deficiency ; Scintillation light yield ; Non-stoichiometry ; Antisite defects
• 刊名：Optical Materials
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：63
• 期：Complete
• 页码：179-184
• 全文大小：1004 K
• 卷排序：63

文摘

Lu3+ deficient Lu3−xAl5O12:Ce ceramics were prepared by solid state reaction method. Lu3−xAl5O12:Ce ceramics displayed roughly ∼4 times higher radioluminescence than LuAG:Ce single crystals. Light yield of Lu3–1% Al5O12:Ce at 1 μs shaping time is ∼18,000 ph/MeV and fast decay time ∼60 ns. LuAl antisite defects were suppressed effectively in Lu3−xAl5O12:Ce ceramics. Al-rich second phase impurities were also observed in Lu3−xAl5O12:Ce ceramics.