Preparation and luminescence properties of Eu^(3+) doped oxyfluoride borosilicate glass ceramics

作     者：李艳红 赵丽 张永明 马晶 

作者机构：School of Materials Science and EngineeringShenyang University of Chemical Technology 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2012年第30卷第12期

页      面：1195-1198页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Project supported by Educational Department of Liaoning (L2011063) 

主　　题：oxyfluoride glass ceramics luminescence local environment rare earths 

摘      要：Oxyfluoride borosilicate glass with the molar composition of 60SiO2-15B2O3- 15Na2O-8CaF2-2NaF-0.25Eu2O3 was synthesized lay a traditional glass melting method. Glass ceramics containing CaF2 nanocrystals were prepared by heat treating the glass samples at a temperature in the range of 6204580 ℃. The results of X-ray diffraction （XRD） indicated that the average crystallite size and the lattice constant of CaF2 nanocrystals increased with the heat treatment temperature increasing. The luminescence spectra showed that the emission intensity of Eu3＋ doped glass ceramics was stronger than that of the glass matrix, and increased with the heat treatment temperature increasing. The left edge of excitation band shifted to shorter wavelength in the glass ceramics. The local environments of Eu3＋ ions in the glass and glass ceramics were different.