中国物理B ›› 2013, Vol. 22 ›› Issue (5): 56101-056101.doi: 10.1088/1674-1056/22/5/056101
• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇 下一篇
谢伟a b c, 王银海c, 邹长伟a, 梁枫a, 全军a, 张军a, 邵乐喜a
Xie Wei (谢伟)a b c, Wang Yin-Hai (王银海)c, Zou Chang-Wei (邹长伟)a, Liang Feng (梁枫)a, Quan Jun (全军)a, Zhang Jun (张军)a, Shao Le-Xi (邵乐喜)a
摘要: Sr3.96Al14O25:Eu2+,Dy3+ long persistent materials with different weight of H3BO3 prepared by the high temperature solid-state reaction method were characterized by X-ray powder diffraction (XRD), scanning electronic microscope (SEM), photoluminescence spectra (PL), and thermoluminescence (TL). The results of XRD indicate that the 3% addition of H3BO3 is in favor of the formation of pure phase Sr4Al14O25, and SrAl12O19 was generated when H3BO3 is in low content or high content. The average grain sizes of samples grow bigger during the increasing of H3BO3. PL spectra show that the emission peak does not shift evidently and the emission intensity changes a little, indicate that the different amount of H3BO3 have a little inference to the crystal field. The decay characteristics and TL measurement show that H3BO3 affect the afterglow properties of Sr3.96Al14O25:Eu2+,Dy3+, because the increasing of H3BO3 lead to more defects in Sr4Al14O25 matrix.
中图分类号: (X-ray diffraction)