期刊
JOURNAL OF LUMINESCENCE
卷 215, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jlumin.2019.116636
关键词
Luminescence; Optical thermometry; Abnormal thermal quenching; Relative sensitivity
类别
资金
- National Natural Science Foundation of China [11674044, 11604037, 11704054]
- Natural Science Foundation of Chongqing [CSTC2017jcyjAX0046, KJ1600406, KJ1704071, KJZD-K201800602, CSTC 2019jcyj-msxm1208]
In this work the temperature-dependent photoluminescence excitation and photoluminescence spectroscopies of Eu3+ tdoped LuVO4 phosphors have been performed in the 298-448 K range. It is found that the charge transfer band (CTB) of [VO4](3-) unites undergoes a red-shift, mainly owing to thermal population of the vibronic sublevels of the ground electronic energy level, as the temperature increases. Due to this, the edge of CTB in PLE exhibits an abnormal negative thermal quenching behavior compared to those of the maximum CTB transition and the intra-configuration f-f transitions of Eu3+ ions. Accordingly, a novel thermometry strategy for realizing ratiometric optical thermometer is proposed by considering different excitation paths taking advantage of their diverse thermal behaviors. For Eu3+-doped LuVO4 compound, our experimental results demonstrate its great potential for high performance optical thermometry, promising with a remarkable relative sensitivity and excellent repeatability in the 298-448 K range.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据