Abstract
In this work, (1−x)(K0.48Na0.52)(Nb0.95Sb0.05)O3−x −xEr0.5(Na0.82K0.18)0.5ZrO3 (x = 0–0.05) ceramics were fabricated by solid-state reaction techniques. The rhombohedral–tetragonal (R–T) phase boundary of the ceramics was identified at 0.04 ≤ x, thus providing an opportunity to investigate the upconversion emission derived from the Er3+ ions at the R–T phase boundary. Under 980 nm laser excitation, the R–T phase ceramics exhibited a strong green emission. In addition, the fluorescence intensity ratios of green emissions at 530 nm and 550 nm were investigated in a temperature range of 180–510 K, and maximum sensing sensitivity was found to be 0.0037 K−1. The results indicate that Er3+-doped ceramics with R–T phase boundaries can be applied to new multifunctional electro-optical temperature sensors. Laser excitation heating effects were also observed in detail.
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Acknowledgements
The work was supported by the Basic Research Program of Jiangsu Education Department (No. 15KJB430012), Natural Science Foundation of Jiangsu Province (No. BK2015020024), Open Fund of State Key Laboratory of Functional Materials for Informatics (No. KYZ14031), supported by the Changzhou Science and Technology Bureau (No. CJ20159049) and the Doctoral Scientific Research Foundation (KYY14046).
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Zou, H., Hu, Y., Zhu, X. et al. Temperature-Sensing Behavior Based on Upconversion Luminescence at the Rhombohedral–Tetragonal Phase Boundary. J. Electron. Mater. 45, 5362–5366 (2016). https://doi.org/10.1007/s11664-016-4732-x
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DOI: https://doi.org/10.1007/s11664-016-4732-x