Synthesis and luminescent properties of Pr-doped Lu3Al5O12 translucent ceramic
来源期刊：Journal of Rare Earths2009年第3期
论文作者：赵江波 王志芳 王超男 韦先涛 李勇 张慰萍 尹民
文章页码：376 - 380
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.
赵江波1,2，王志芳3，王超男2，韦先涛2，李勇2，张慰萍2，尹民1,2
1. Hefei National Laboratory for Physical Sciences at the Microscale2. Department of Physics,University of Science and Technology of China3. 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.
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