Er-doped Bi₃Ti(Ta_xNb_1−x)O₉ multifunctional ferroelectrics: up-conversional photoluminescence and ferroelectric properties

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• 作者：Yihao Gu ; Yanxia Li ; Fuhui Zheng…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：28
• 期：1
• 页码：501-506
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Optical and Electronic Materials; Characterization and Evaluation of Materials;
• 出版者：Springer US
• ISSN：1573-482X
• 卷排序：28

文摘

Bismuth layered-structure oxides in the Bi₃Ti(Ta_xNb_1−x)O₉ quasi-binary system were synthesized by the conventional solid state reaction approach, and their ferroelectric and piezoelectric properties were evaluated together with the structures. The XRD analysis showed that all the ceramics were the single phase. It was found that the remnant polarization (Pr) reached a maximum of 4.2 µC/cm2 when x = 0.5 mol%. In addition, a bright up-conversional photoluminescence (UC) can be measured by partial substituting Er3+ for Bi3+. Under 980 nm radiation excitation, three emission bands located at green (534, 549 nm) and red (670 nm) wavelength regions were obtained at room temperature. These Er3+ doped Bi₃Ti(Ta_0.5Nb_0.5)O₉ based ferroelectrics could be used as a multifunctional material for a wide range of applications.