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Synthesis, characterization and luminescent properties of needle-like lanthanide-doped orthorhombic Y5O4F7

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【作者】 刘必秋； 刘丽莎； 郭凯； 王娇； 朱林林； 张辉； 文闻； 杨铁莹； 赵景泰；

【Author】 LIU Biqiu 1,2 , LIU Lisha 1,2 , GUO Kai 3 , WANG Jiao 4 , ZHU Linlin 1,2 , ZHANG Hui 1 , WEN Wen 5 , YANG Tieying 5 , ZHAO Jingtai 1,*(1. Key Laboratory of Transparent Opto-Functional Inorganic Materials of Chinese Academy of Sciences, Shanghai Institute of Ceramics, Shanghai 200050, China; 2. University of Chinese Academy of Sciences, Beijing 100039, China; 3. Max Planck Institute for Chemical Physics of Solids, Dresden 01187, Germany; 4. Department of Materials Science, Fudan University, Shanghai 200433, China; 5. Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China)

【机构】 Key Laboratory of Transparent Opto-Functional Inorganic Materials of Chinese Academy of Sciences, Shanghai Institute of Ceramics； University of Chinese Academy of Sciences； Max Planck Institute for Chemical Physics of Solids； Department of Materials Science, Fudan University； Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences；

【摘要】 Thermal annealing of YOH1.1F1.9 and YOH1.1F1.9:Ln3+(Ln3+=Eu3+,Tb3+ and Gd3+) precursors in air gave access to synthesize yttrium oxyfluoride phosphors with well-preserved needle-like morphologies. The phase purities of samples strongly depended on the thermal annealing temperature. At 600 °C, pure Y5O4F7 with orthorhombic structure were obtained, as evidenced by powder X-ray diffraction measurement and chemical analysis. The interesting microstructure evolution of the annealed sample from well-organized nanoparticles on curly slices to microrod-bundle structure had been aroused by raising annealing temperature. The multicolor fluorescent emissions of Y5O4F7:Ln3+ phosphors were observed, e.g. ultraviolet emission for Gd3+ , green emission for Tb3+ and red emission for Eu3+ , which resulted from characteristic transitions of different lanthanide ions.

【Abstract】 Thermal annealing of YOH1.1F1.9 and YOH1.1F1.9:Ln3+(Ln3+=Eu3+,Tb3+ and Gd3+) precursors in air gave access to synthesize yttrium oxyfluoride phosphors with well-preserved needle-like morphologies. The phase purities of samples strongly depended on the thermal annealing temperature. At 600 °C, pure Y5O4F7 with orthorhombic structure were obtained, as evidenced by powder X-ray diffraction measurement and chemical analysis. The interesting microstructure evolution of the annealed sample from well-organized nanoparticles on curly slices to microrod-bundle structure had been aroused by raising annealing temperature. The multicolor fluorescent emissions of Y5O4F7:Ln3+ phosphors were observed, e.g. ultraviolet emission for Gd3+ , green emission for Tb3+ and red emission for Eu3+ , which resulted from characteristic transitions of different lanthanide ions.

【关键词】 oxyfluoride； needle-like morphology； luminescence； thermal annealing； rare earths；
【Key words】 oxyfluoride； needle-like morphology； luminescence； thermal annealing； rare earths；
【基金】 Project supported by National Natural Science Foundation of China (11104298);the CAS/SAFEA International Partnership Program for Creative Research Teams (51121064);the CAS-MPG Partner Group
  • 【文献出处】 Journal of Rare Earths ,稀土学报(英文版) , 编辑部邮箱 ,2013年08期
  • 【分类号】O611.4
  • 【被引频次】3
  • 【下载频次】24
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