X-ray excited optical luminescence of Eu-doped YAG nanophosphors produced via glucose sol-gel route
X-ray excited optical luminescence of Eu-doped YAG nanophosphors produced via glucose sol-gel route
复制标题
DOI：
10.1016/j.ceramint.2016.03.142
复制
发表时间：
2016-06-01
影响因子：
5.2
通讯作者：
Rezende, M. V. dos S.
中科院分区：
文献类型：
--
作者：
Hora, D. A.;Andrade, A. B.;Rezende, M. V. dos S.
以葡萄糖为螯合剂，采用溶胶-凝胶法制备了铕掺杂YAG纳米荧光粉。研究了YAG/葡萄糖摩尔比对YAG晶体结构和x射线激发光学发光性能的影响。结果表明，随着YAG/葡萄糖摩尔比的增加，平均晶粒尺寸和XEOL发射强度发生变化。同时测量了Eu lm边缘附近的x射线吸收近边结构（XANES）和总XEOL产率，结果表明Eu的价态不随YAG/葡萄糖比的变化而变化。然而，发光作为能量函数增加。XEOL发射光谱显示，当YAG/glucose=1:1 M比时，产光率最高。(C) 2016 Elsevier Ltd and Techna Group S.r.l版权所有
Eu-doped YAG nanophosphors were successfully synthesized via sol-gel process by using glucose as a chelating agent. The effect of YAG/glucose molar ratio on the crystalline structure and X-ray excited optical luminescence (XEOL) of YAG were investigated. The results indicated that the average crystallite size and XEOL emission intensity change with the YAG/glucose molar ratio. X-ray absorption near edge structure (XANES) and total XEOL yield were measured simultaneously around the Eu Lm-edge and indicated that the Eu valence does not change with the YAG/glucose ratio. However, luminescence increases as an energy function. XEOL emission spectra revealed that samples produced with YAG/glucose=1:1 M ratio presented the highest light yield. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.