Er,Zr 共掺杂对(K0.16Na0.84)0.5Bi4Ti4O15压电陶瓷电学 和上转换发光性能的影响

作者：江亚林 江向平 陈超 涂娜 江兴安 陈云婧

单位：景德镇陶瓷学院材料科学与工程学院 江西省先进陶瓷重点实验室 江西 景德镇 333001

关键词：正交畸变 上转换发光 介电性能 压电陶瓷

分类号：TQ174

出版年,卷(期):页码：2016,44(9):0-0

DOI：10.14062/j.issn.0454-5648.2016.09.03

摘要：

采用固相法制备 Er、Zr 共掺铋层状结构陶瓷(K0.16Na0.84Bi)0.47Er0.02Bi4Ti4–xZrxO15(KNBET–Zr–x，0≤x≤0.12，x 为摩 尔分数)，研究了不同 Zr 含量对样品的结构、电学与上转换发光性能的影响。结果表明：所有样品均为单一的正交相铋层状 结构，无其他杂相出现。随着 Zr 掺入量的增加，晶格常数 a、b、c 不断增大，正交畸变（b/a）的值逐渐减小；适量 Zr 掺杂 使样品的介电损耗降低，剩余极化强度 2Pr和压电常数 d33得到提高；当 x=0.04 时，样品具有佳的综合电学性能：介电损 耗 tanδ=0.61%、压电性能 d33=24 p/CN、剩余极化 2Pr=3.02 μC/cm2。在 980 nm 近红外光源激发下，所有样品均呈现出较强的 绿光发射，对应于 2H11/2→4I15/2和 4S3/2→4I15/2的跃迁。随着 Zr 离子掺入量增加，正交畸变(b/a)减少，荧光强度逐渐下降。

Er and Zr–codoped bismuth layered structured ceramics (BLSFs), (K0.16Na0.84Bi)0.47Er0.02Bi4Ti4–xZrxO15 (KNBET–Zr–x,0≤x≤0.12) were synthesized by a solid state reaction method. The structural, electrical and up-conversion (UC) photoluminescence properties were investigated. The results show that all the samples possess a single orthorhombic BLSFs structure without any secondary phase. The lattice parameters a, b and c increase with increasing Zr4+ substitution and the values of orthorhombic distortion (b/a) calculated decrease gradually. The doping of an appropriate content of Zr4+ ions can decrease the tanδ and increase the 2Pr as well as d33. The sample with x=0.04 has the optimal comprehensive performance, i.e., tanδ (0.61%), d33 (24 p/CN) and 2Pr (3.02 μC/cm2). In addition, under the 980 nm near infrared excitation, all the samples emit a bright UC greenlight corresponding to the transitions 2H11/2→4I15/2 and 4S3/2→4I15/2 level, respectively. The weaker UC emission after Zr introduction can be attributed to the decreased orthorhombic distortions (b/a).

基金项目：

国家自然科学基金(51562014，51262009)；江西自然科学基 金(20133ACB20002，20142BAB216009)资助。

作者简介：

江亚林(1992—)，男，硕士研究生。 通信作者：江向平(1964—)，男，教授。

参考文献：

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