In this paper, LaCeO powders co-activated by Ho and Yb were synthesized by a high temperature solid-state reaction. Both Ho and Yb substitute the La sites in the LaCeO lattice, where the Ho concentration is 0.5 at.% and the Yb concentration varies in the range of 10~18% at.%. Pumped by a 980 nm laser, the up-conversion (UC) green emission peak at 547 nm and the red emission at 661 nm were detected. When the doping concentration of Ho and Yb are 0.5 at.% and 14% at.%, respectively, the UC emission reaches the strongest intensity. The temperature-sensing performance of LaCeO:Ho with Yb was studied in the temperature range of 303-483 K, where the highest relative sensitivity (S) is 0.0129 K at 483 K. The results show that the powder LaCeO:Ho, Yb can be a potential candidate for remote temperature sensors.
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| http://dx.doi.org/10.3390/ma17071692 | DOI Listing |
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