xLiNbO(3)-(1-x)(K,Na)NbO3 ceramics: A new class of phosphors with tunable upconversion luminescence by external electric field and excellent optical temperature sensing property
xLiNbO(3)-(1-x)(K,Na)NbO3 ceramics: A new class of phosphors with tunable upconversion luminescence by external electric field and excellent optical temperature sensing property
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xLiNbO(3)-(1-x)(K,Na)NbO3陶瓷：一类新型荧光粉，具有通过外部电场可调谐上转换发光和优异的光学温度传感性能
DOI：
10.1016/j.jallcom.2018.08.019
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发表时间：
2019
影响因子：
6.2
通讯作者：
Yao Xi
中科院分区：
文献类型：
--
作者：
Zhang Ying;Wang Xusheng;Ye Huihua;Li Yongxiang;Yao Xi
本研究采用固相反应法制备了掺Er3+和Er3+/Yb3+共掺的xLiNbO_3-(1-x)(K，Na)NbO_3(XLN-(1-x)KNN)铁电陶瓷，发现样品在外电场作用下表现出可调的上转换发光(UCL)，并具有良好的光学温敏性能。通过改变极化时间，有效地控制了外加电场作用下的UCL强度。此外，在0.4LN-0.6KNN：Er~(3+)，3Yb~(3+)样品中观察到了最佳的UCL，其在83-663 K温度范围内的光学温度灵敏度(0.006 KK−_1)比0.4LN-0.6KNN：Er~(3+)样品的高131%。这些结果表明，XLN-(1-x)KNN铁电陶瓷有望成为高灵敏度、宽温度范围的光电积分器和光学温度传感器的候选材料。
In this study, Er3+-doped and Er3+/Yb3+-co-doped xLiNbO3-(1-x)(K,Na)NbO3(xLN-(1-x)KNN) ferroelectric ceramics were synthesized by a solid state reaction process and the samples were found to exhibit tunable upconversion luminescence (UCL) under an external electric field as well as excellent optical temperature-sensing properties. By altering the polarization time, UCL intensity was effectively controlled under an external electric field. Furthermore, an optimal UCL was observed in a 0.4LN-0.6KNN:Er3+,3Yb3+sample and its excellent optical temperature sensitivity (0.006 K−1at 643 K) from 83 to 663 K was 131% higher than that of 0.4LN-0.6KNN:Er3+. These results suggested that xLN-(1-x)KNN ferroelectric ceramics were promising candidates for an opto-electronic integrator and optical temperature sensors with high sensitivity and broad temperature range.