Luminescence properties and optical sensing behaviors of Sr2GdSbO6∶Eu3+phosphors

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外文摘要：Novel orange-red Sr2GdSbO6∶xEu3+(x=0,0.05,0.1,0.2,0.3,0.4,0.5 and 0.6)phosphors were successfully prepared by the traditional high-temperature solid-state method.The results of Rietveld refinement,energy dispersive spectroscopy(EDS)spectrum and elemental mapping demonstrate that Eu3+suc-cessfully replaces the Gd3+sites and distributes uniformly in the particles of phosphors.The lumines-cence properties of Sr2GdSbO6∶Eu3+phosphors were investigated in detail.The emission spectra of the strongest emission peak is the 5D0→7F1(593 nm)transition,which can emit orange-red light under 393 nm excitation.When the doping concentration of Eu3+ions is x=0.2,the luminescence intensity of the phosphors reaches the highest.The detailed mechanism of concentration quenching is attributed to dipole-dipole interaction.The thermal stability values of Sr2GdSbO6∶0.2Eu3+phosphors are 87％,82％and 114％under 393,467 and 527 nm excitations,respectively.The causes of the abnormal thermal quenching under 527 nm excitation were analyzed.Based on the abnormal thermal quenching under 527 nm excitation,the optical thermometry properties of Sr2GdSbO6∶0.2Eu3+phosphors were investi-gated by fluorescence intensity ratio(FIR)technique,and appreciable relative sensitivity was obtained.The results suggest that Sr2GdSbO6∶0.2Eu3+phosphors can be potentially applied to w-LEDs and optical thermometers.

外文关键词：

Sr2GdSbO6∶Eu3+PhosphorsLuminescence propertiesAbnormal thermal quenchingRare earths

作者：

Youfa Tai、Ruirui Cui、Jun Zhang、Chunkai Wang、Tingyu Zhao、Beiqiao Zhang、Chaoyong Deng

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作者单位：

Key Laboratory of Functional Composite Materials of Guizhou Province,College of Big Data and Information Engineering,Guizhou University,Guiyang,550025,China

College of Computer and Information Engineering,Guizhou University of Commerce,Guiyang,550014,China

School of Electronics and Information Engineering,Guiyang University,Guiyang,550005,China

基金：

National Natural Science Foundation of ChinaGuizhou Provincial Department of Education Science and Technology Uprooted Talents ProjectGuizhou Provincial Department of Education Rolling Support for Provincial Universities Scientific Research Platform Team ProjectScience and Technology Foundation of Guizhou Province

项目编号：

52262020[2022]085[2022]036ZK[2021]328

出版年：

2024

DOI：

10.1016/j.jre.2023.06.009

稀土学报(英文版)

中国稀土学会

稀土学报(英文版)

CSTPCDEI

影响因子：1.3

ISSN：1002-0721

年,卷(期)：2024.42(8)