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Synthesis and luminescent properties of Pr-doped Lu3Al5O12 translucent ceramic

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【作者】 赵江波； 王志芳； 王超男； 韦先涛； 李勇； 张慰萍； 尹民；

【Author】 ZHAO Jiangbo 1,2,WANG Zhifang 3,WANG Chaonan 2,WEI Xiantao2, LI Yong 2,ZHANG Weiping 2,YIN Min 1,2 (1.Hefei National Laboratory for Physical Sciences at the Microscale,Hefei 230026,China;2.Department of Physics,University of Science and Technology of China,Hefei 230026,China;3.National Center for Nanoscience and Technology,Beijing 100190,China)

【机构】 Hefei National Laboratory for Physical Sciences at the Microscale； Department of Physics,University of Science and Technology of China； National Center for Nanoscience and Technology；

【摘要】 Lutetium aluminum garnet(LuAG) precursors doped with different Pr3+ concentration(0.25at.%,0.5at.%,1.0at.%,3.0at.%,5.0at.%) were synthesized via a co-precipitation method using ammonium hydrogen carbonate as precipitant. The phase evolution and morphology of the precursor were characterized with X-ray diffractometer(XRD) and transmission electron microscopy(TEM) . The resultant LuAG:Pr3+ powder was sintered into translucent ceramic without any additives in vacuum at 1150 °C and then in nitrogen atmosphere at 1700 °C. Photoluminescence spectra of LuAG:Pr3+ powder and ceramic were measured at room temperature in vacuum ultraviolet(VUV) and ultraviolet(VU) region. For the 5d-4f transition of Pr3+ ions,dominant emission of ceramic samples peaking round 311 nm had higher luminescence intensity. And the host absorption in ceramic samples was not as intensive as that in powder samples. The luminescent intensity of LuAG:Pr3+ varied with the Pr3+ contents and the quenching concentration was about 1.0at.% for ceramic and 3.0at.% for powder,which was much higher than 0.24at.% for LuAG:Pr3+ single crystals. This phenomenon showed that the ceramic had some superiority over single crystals.

【Abstract】 Lutetium aluminum garnet(LuAG) precursors doped with different Pr3+ concentration(0.25at.%,0.5at.%,1.0at.%,3.0at.%,5.0at.%) were synthesized via a co-precipitation method using ammonium hydrogen carbonate as precipitant. The phase evolution and morphology of the precursor were characterized with X-ray diffractometer(XRD) and transmission electron microscopy(TEM) . The resultant LuAG:Pr3+ powder was sintered into translucent ceramic without any additives in vacuum at 1150 °C and then in nitrogen atmosphere at 1700 °C. Photoluminescence spectra of LuAG:Pr3+ powder and ceramic were measured at room temperature in vacuum ultraviolet(VUV) and ultraviolet(VU) region. For the 5d-4f transition of Pr3+ ions,dominant emission of ceramic samples peaking round 311 nm had higher luminescence intensity. And the host absorption in ceramic samples was not as intensive as that in powder samples. The luminescent intensity of LuAG:Pr3+ varied with the Pr3+ contents and the quenching concentration was about 1.0at.% for ceramic and 3.0at.% for powder,which was much higher than 0.24at.% for LuAG:Pr3+ single crystals. This phenomenon showed that the ceramic had some superiority over single crystals.

【关键词】 ceramic； Lu3Al5O12； praseodymium； VUV-UV spectra； concentration quenching； rare earths；
【Key words】 ceramic； Lu3Al5O12； praseodymium； VUV-UV spectra； concentration quenching； rare earths；
【基金】 supported by the National Natural Science Foundation of China (10774140);Funds for International Cooperation and Exchange of the National Nature Science Foundation of China (50711120504);Specialized Research Fund for the Doctoral Program of Higher Education (20060358054);Special Foundation for Talents of Anhui Province, China (2007Z021)
  • 【文献出处】 Journal of Rare Earths ,稀土学报(英文版) , 编辑部邮箱 ,2009年03期
  • 【分类号】TQ174.1
  • 【被引频次】2
  • 【下载频次】80
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