Simultaneous achievement of sensitivity enhancement and dual-mode luminescence through co-doping Eu3+ in Ca2MgWO6:Er3+/Yb3+ phosphor
Simultaneous achievement of sensitivity enhancement and dual-mode luminescence through co-doping Eu3+ in Ca2MgWO6:Er3+/Yb3+ phosphor
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Ca2MgWO6:Er3/Yb3荧光粉中共掺杂Eu3同时实现灵敏度增强和双模发光
DOI：
10.1016/j.jlumin.2022.118804
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发表时间：
2022-02
影响因子：
3.6
通讯作者：
Weixiong You
中科院分区：
文献类型：
--
作者：
Hao Cheng;Zhong Jiang;Fengqin Lai;Huimin Wang;Zhongliang Xiao;Jing Sun;Weixiong You
Demands for temperature probe technologies and information security have driven the development of luminescent materials doped with lanthanide ions (Ln 3+ ) because of their distinctive optical properties. Nevertheless, the problems of poor temperature sensing performance and single-mode luminescence restrict most materials' applications in the fields of temperature sensing and optical anti-counterfeiting. Herein, we have effectively achieved the enhancement of the temperature sensing sensitivity factor and the multi-mode anti-counterfeiting at the same time by co-doping Eu 3+ in the up-conversion Ca 2 MgWO 6 :Er 3+ /Yb 3+ material. The maximum absolute sensitivity based on the 2 H 11/2 / 4 S 3/2 couples of Er 3+ increased from 81.83 × 10 −4 K −1 at 423 K to 88.12 × 10 −4 K −1 at 398 K, which was attributed to the energy transfer between Er 3+ and Eu 3+ which increases the fluorescence intensity ratio values. Utilizing the down-conversion luminescence characteristics of Eu 3+ ion, phosphors exhibited color tunability under 980 nm and 365 nm excitations to achieve dual-mode anti-counterfeiting function. Meanwhile, the fluorescent anti-counterfeiting pattern prepared by screen printing technology helped materials towards emerging anti-counterfeiting applications. Therefore, the novel phosphors have potential applications in noncontact temperature sensing and optical anti-counterfeiting security fields. • The phosphor has achieved the enhancement of the temperature sensing sensitivity factor by co-doping Eu 3+ ions. • The phosphor exhibits color tunability under 980 and 365 nm excitations to achieve dual-mode anti-counterfeiting function. • The Ca 2 MgWO 6 : Er 3+ /Yb 3+ /Eu 3+ phosphor is a novel double perovskite tungstate material.
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