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- Title
Novel Fluoride Matrix for Dual-Range Optical Sensors and Visualization.
- Authors
Alexandrov, Alexander A.; Petrova, Lada A.; Pominova, Daria V.; Romanishkin, Igor D.; Tsygankova, Maria V.; Kuznetsov, Sergey V.; Ivanov, Vladimir K.; Fedorov, Pavel P.
- Abstract
Novel tetragonal matrix Ba0.5−xLn0.5NaxF2.5−x with x = 0.08, doped by Yb3+, Ho3+, Er3+, was synthesized by molten salt synthesis (MSS) from nitrate flux. XRD data show that the tetragonal phase with a = 4.122(1) Å, c = 17.672(1) Å is stable in an argon atmosphere up to 960 °C. Luminescence spectra recorded in 500–900 nm and 1050–1700 nm upon 974 nm pumping demonstrated the characteristic luminescence at 1550 nm (4I13/2 → 4I15/2) for Er3+ and 1150 nm (5I6 → 5I8) for Ho3+. The relative thermal sensitivity (Sr) at 296–316 K were 0.3%×K−1 and 5.5%×K−1 in shortwave infrared (SWIR) and visible range, respectively. Synthesized luminophores can be used as dual-range optical temperature sensors, which simultaneously operate in visible and SWIR ranges.
- Subjects
OPTICAL sensors; LUMINESCENCE spectroscopy; LUMINOPHORES; DATA visualization; FLUORIDES; X-ray diffraction; FUSED salts
- Publication
Applied Sciences (2076-3417), 2023, Vol 13, Issue 18, p9999
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app13189999