Acta Chimica Sinica ›› 2008, Vol. 66 ›› Issue (19): 2170-2173. Previous Articles     Next Articles

Reports

SiO2/LaF3:Eu3+核壳结构发光粒子的制备与表征

刘桂霞* 王进贤 苏瑞相 董相廷

  

  1. (长春理工大学化学与环境工程学院 长春 130022)

  • 收稿日期:2007-10-16 修回日期:2008-04-10 出版日期:2008-10-14 发布日期:2008-10-14
  • 通讯作者: 刘桂霞

Preparation and Characterization of SiO2/LaF3:Eu3+ Core-Shell Structural Luminescence Particles

LIU, Gui-Xia* WANG, Jin-Xian SU, Rui-Xiang DONG, Xiang-Ting   

  1. (School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022)
  • Received:2007-10-16 Revised:2008-04-10 Online:2008-10-14 Published:2008-10-14
  • Contact: LIU, Gui-Xia

SiO2/LaF3:Eu3+ core-shell structural luminescence particles were prepared by a wet method, and the structure and luminescence properties were characterized. XRD patterns showed that the coated LaF3:Eu3+ layer took a cubic crystal phase. FTIR spectra indicated that the citric acid was modified on the silica surface. TEM images presented that the core-shell composite particles were all in sphere shape, and the coating layer was about 10~20 nm. The photoluminescence properties were shown to be the same as those of the pure LaF3:Eu3+, and the strong emission peak is near 589 nm which is corresponding to 5D0—7F1 magnetic dipole transition of Eu3+, suggesting that Eu3+ is located at the same lattice phase in both the core-shell particles and the pure particles.

Key words: LaF3:Eu3+, core-shell structure, luminescence