期刊
JOURNAL OF LUMINESCENCE
卷 227, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jlumin.2020.117517
关键词
Lanthanide ions; Up-conversion emission; Rare-earth doped phosphates; Luminescence thermometry; Stark splitting; Temperature sensing
类别
资金
- Polish National Science Centre
- Poland [UMO-2016/21/B/ST5/00110, UMO-2018/31/N/ST4/00684]
- European Union through the European Social Fund under the Operational Program Knowledge Education Development [POWR.03.02.00-00-I023/17, POWR.03.02.00-00-i020/17]
Novel precise thermometers are increasingly important due to the development of electronic and optoelectronic devices. Up-converting Sr-3(PO4)(2):Er3+,Yb3+ phosphor, exhibiting anti-Stokes luminescence has been developed as an optical temperature sensor. The basic physicochemical properties of the synthesized material, i.e. crystal structure, morphology, diffuse reflectance spectrum, up-conversion (UC) emission and the corresponding chromaticity diagram were systematically studied. The UC luminescence properties of the micron-sized particles synthesized are strongly temperature-dependent, from 303 to 623 K. By using a single material, the selection of different Stark sublevels results in various temperature sensitivities. Using band intensity ratio of Er3+ Stark components H-2(11)/2(1)/S-4(3/2(1)), the relative sensitivity of 0.88% K-1 at 303 K was obtained.
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