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Dual-mode green emission and temperature sensing properties of rare-earth-element-doped biphasic calcium phosphate composites
•Dual-mode intense green emission of HA/β-TCP: Er-Yb-Mo composite synthesized by hydrothermal method.•Mo6+ doped system enhances strongly both UC and DC green emissions.•Dual-mode mechanism of HA/β-TCP:Er-Yb-Mo phosphor has explained.•Good temperature sensing property was obtained. [Display omitted]...
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Published in: | Journal of alloys and compounds 2021-08, Vol.871, p.159483, Article 159483 |
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Main Authors: | , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | •Dual-mode intense green emission of HA/β-TCP: Er-Yb-Mo composite synthesized by hydrothermal method.•Mo6+ doped system enhances strongly both UC and DC green emissions.•Dual-mode mechanism of HA/β-TCP:Er-Yb-Mo phosphor has explained.•Good temperature sensing property was obtained.
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This work presents a novel multifunctional material synthesized by hydroxyapatite/ β-tricalcium phosphate (HA/β-TCP) doped with Er-Yb-Mo ions (using hydrothermal method) and its characterization, showing a peculiar property of green dual-mode emissions (up and down-conversions). It was found that the obtained material exhibits an intense green emission (510–560 nm) both via up-conversion (excited by 975 nm) and down-conversion (excited by 379 nm), which depend on the Mo6+ contents. Particularly, compared with the free-Mo6+ sample, the green emission intensities of the samples doped with 5% Mo6+ mol are 50 and 35 times higher for UC and DC emissions, respectively. Furthermore, the temperature sensing property of the HA/β-TCP: Er-Yb-Mo composite is investigated by fluorescence intensity ratio (FIR) technique, showing a high and competitive sensitivity with a maximum value of 0.0064 K−1 at 403 K. The results indicated that the HA/β-TCP: Er-Yb-Mo phosphor can be useful for high-temperature-sensing applications. |
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ISSN: | 0925-8388 1873-4669 |
DOI: | 10.1016/j.jallcom.2021.159483 |