节点文献

Y₂SiO₅:Ce³⁺ particle growth during sol-gel preparation

推荐 CAJ下载
PDF下载
不支持迅雷等下载工具，请取消加速工具后下载。

【Author】 LI Xiujuan 1,2, JIAO Huan 1,3, WANG Xiaoming 1, ZENG Zhengzhi 2, JING Xiping (1. Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; 2. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China; 3. Key Labora- tory of Macromolecular Science of Shaanxi Province, School of Chemistry & Materials Science, Shaanxi Normal University, Xi’an 710062, China)

【机构】 Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University； College of Chemistry and Chemical Engineering, Lanzhou University； Key Labora-tory of Macromolecular Science of Shaanxi Province, School of Chemistry & Materials Science, Shaanxi Normal University；

【摘要】 The phosphor Y2SiO5:Ce3+ was prepared by a sol-gel method and the particle growth process was investigated by XRD, SEM and TEM. After heating at 400 °C, the as-dried gel became a powder composed of mixed phases of polycrystalline Y2O3 and amorphous SiO2. With an increase in temperature, the crystallinity of Y2O3 improved. The sample quickly changed to the pure Y2SiO5 phase when it was heated at 1400 °C for 10 min. SEM indicated that the as-dried gel consisted of large porous particles. At an annealing temperature of higher than 400 °C, the pores in the large particles gradually expanded and grains started to appear. Consequently, the large particles disintegrated into small particles. When the sample was heated at 1400 °C, we obtained fine phosphor particles (around 2 μm) with smooth surfaces. The optimized condition for the preparation of the Y2SiO5:Ce3+ phosphor was to heat at 1400 °C for 2 h.更多还原

【Abstract】 The phosphor Y2SiO5:Ce3+ was prepared by a sol-gel method and the particle growth process was investigated by XRD, SEM and TEM. After heating at 400 °C, the as-dried gel became a powder composed of mixed phases of polycrystalline Y2O3 and amorphous SiO2. With an increase in temperature, the crystallinity of Y2O3 improved. The sample quickly changed to the pure Y2SiO5 phase when it was heated at 1400 °C for 10 min. SEM indicated that the as-dried gel consisted of large porous particles. At an annealing temperature of higher than 400 °C, the pores in the large particles gradually expanded and grains started to appear. Consequently, the large particles disintegrated into small particles. When the sample was heated at 1400 °C, we obtained fine phosphor particles (around 2 μm) with smooth surfaces. The optimized condition for the preparation of the Y2SiO5:Ce3+ phosphor was to heat at 1400 °C for 2 h.更多还原

【关键词】 optical materials； morphology； luminescence； sol-gel chemistry； rare earths；
【Key words】 optical materials； morphology； luminescence； sol-gel chemistry； rare earths；

【基金】 Project supported by the State Key Program for Basic Research of China (G1998061306) ;the National Natural Science Foundation of China (20221101, 20821091, 20423005)

【文献出处】 Journal of Rare Earths ,稀土学报(英文版) , 编辑部邮箱 ,2010年04期

【分类号】O648.17
【被引频次】7
【下载频次】103

知网节下载

节点文献中：

本文链接的文献网络图示:

本文的引文网络

节点文献

节点文献

Y2SiO5:Ce3+ particle growth during sol-gel preparation

本文链接的文献网络图示:

Y₂SiO₅:Ce³⁺ particle growth during sol-gel preparation