期刊
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 60, 期 7, 页码 2931-2943出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.0c05996
关键词
-
资金
- Natural Science Foundation of Zhejiang Province, China [LY18F050006, LQ21A040003]
- Natural Science Foundation of Ningbo [2019A610057, 2018A610040]
- General Research Project of Department of Education for Zhejiang Province [Y201941319]
- K.C. Wong Magna Fund in Ningbo University
A series of Dr(3+)/Eu3+ co-doped BaLa4Si3O13 phosphors were synthesized using a solid-state reaction method, demonstrating superior thermal stability and emission intensity. The enhanced energy transfer from Dy3+ to Eu3+ at high temperature contributes to the improved thermal behavior. These co-doped phosphors show great potential for application in white-light-emitting diodes and optical temperature sensing.
A series of Dr(3+)/Eu3+ co-doped BaLa4Si3O13 phosphors were synthesized by a solid-state reaction method. The Dy3+/Eu3+ co-doped BaLa4Si3O13 phosphors exhibit superior thermal behavior to the corresponding Dy3+ singly doped and Eu3+ singly doped BaLa4Si3O13 phosphors. A remarkable enhancement of thermal stability is observed as the Eu3+ concentration increases. The emission intensity is enhanced by a factor of similar to 1.1 at 423 K compared to that at 298 K for the 11 mol % Eu3+ doped sample. The improved thermal stability is ascribed to the enhanced energy transfer from Dy3+ to Eu3+ at high temperature, which enhances the Eu3+ emission and effectively compensates the thermal quenching-induced emission reduction. The synthesized phosphors can further be employed as optical thermometry materials, with the highest relative sensitivity (S-r) of 1.462% K-1 at 497 K. The results demonstrate that employing energy transfer is an effective strategy to design anti-thermal phosphors and the synthesized Dy3+/Eu3+ co-doped BaLa4Si3O13 phosphors show great potential as red phosphors for white-light-emitting diodes and optical temperature sensing applications.
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