期刊
CERAMICS INTERNATIONAL
卷 48, 期 3, 页码 3860-3868出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2021.10.171
关键词
Praseodymium; Phosphors; Fluorescence intensity ratio; Optical thermometry
资金
- Scientific Research Foundation of Hunan Provincial Education Department of China [20A274]
- Natural Science Foundation of Hunan Province [2019JJ50282]
- Double First-Class Discipline Construction Program of Hunan Province [[2018]469]
- Planned Science and Technology Project of Hunan Province [2016TP1028]
- Undergraduate Innovation and Entrepreneurship Training Program of Hunan Province [S202110553020]
The photoluminescence and temperature sensitivities of Ca3Y2Si3O12:Pr3+ thermophosphors with silico-carnotite structure were investigated, showing promising potential in the field of optical thermometry.
The photoluminescence and temperature sensitivities of Ca3Y2Si3O12:Pr3+ thermo-phosphors with silico-carnotite structure obtained by solid state reaction method were investigated. Pr3+ ions were accommodated in the A sites having coordination number of 9 in AB(2)C(2)(SiO4)(3) to replace Y3+ ions. The typical sample consisted of microcrystals with an irregular structure and the surface of particles was smooth, which could enhance the luminescence due to reducing the scattering and non-radiation produced by rough surfaces. The band gap value of typical sample was about 4.01 eV. Dipole-dipole interaction could account for concentration quenching. The two thermometry strategies including normalized intensities from P-3(0)-> H-3(4) transition and Fluorescence intensity ration (FIR) of P-3(0)-> H-3(4)/P-3(1)-> H-3(5) transitions were employed for temperature sensing in 298-573 K. The results revealed that Ca3Y2Si3O12:Pr3+ thermo-phosphors had good temperature sensitivity performance with maximum S-r of 0.59% K-1@573 K and 0.762% K-1@298 K in the above two methods, respectively. Hence, Ca3Y2Si3O12: Pr3+ would be a promising candidate in the field of optical thermometry.
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