Electric and optical properties of Er3+ - and Er3+/Yb3+-modified PSN-PMN-PT crystals
Electric and optical properties of Er3+ - and Er3+/Yb3+-modified PSN-PMN-PT crystals
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DOI：
10.1016/j.jallcom.2017.06.136
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发表时间：
2017
影响因子：
6.2
通讯作者：
Long Wei
中科院分区：
文献类型：
--
作者：
Xi Zengzhe;He Aiguo;Fang Pinyang;Li Xiaojuan;Long Wei
采用助熔剂法生长了PSN-PMN-PT、Er ~（3+）和Er ~（3+）/Yb ~（3+）掺杂的PSN-PMN-PT晶体。研究了Er 3+和Er 3 +/Yb 3+修饰对晶体结构、电学和光学性质的影响。通过XRD确定所有晶体的相结构为纯钙钛矿结构。PSN-PMN-PT晶体沿着[100]晶向的介电性能显著提高，Pr分别从24.2提高到30.99和28.5 μC/cm 2。在980 nm激光激发下，观察到Er 3+和Er 3 +/Yb 3+修饰的PSN-PMN-PT晶体在UV-VIS-NIR波段的特异吸收和强的绿色和红色UC PL。对这些改性的PSN-PMN-PT晶体的UC发射机制进行了讨论。
PSN-PMN-PT, Er3+-, and Er3+/Yb3+-modified PSN-PMN-PT crystals were grown by using the flux method. The effects of Er3+and Er3+/Yb3+modification on the crystal structure, electric, and optical properties were investigated. Phase structure of all the crystals was determined as a pure perovskite structure by the XRD. The dielectric properties of the PSN-PMN-PT crystals along [100]-orientation were enhanced significantly, and thePrincreased from 24.2 to 30.99 and 28.5 μC/cm2, respectively by the Er3+and Er3+/Yb3+modification. The specific absorption at the UV-VIS-NIR band and the strong green and red UC PL at 980 nm laser excitation were observed in the Er3+- and Er3+/Yb3+-modified PSN-PMN-PT crystals. The UC emission mechanisms of these modified PSN-PMN-PT crystals were also discussed.