Electric and optical properties of Tm3 /Yb(3 )co-doped PZN-9PT crystals
Electric and optical properties of Tm3 /Yb(3 )co-doped PZN-9PT crystals
复制标题
Tm3/Yb(3)共掺杂PZN-9PT晶体的电学和光学性质
DOI：
10.1007/s10854-019-00665-x
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Zhao Wei
中科院分区：
文献类型：
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作者：
Li Ying;Xi Zengzhe;Fang Pinyang;Li Xiaojuan;Long Wei;He Aiguo;Zhao Wei
采用高温熔剂法生长了Tm~(3+)/Yb~(3+)共掺的PZN-9PT(PZN-9PT)PZN-9PT单晶。研究了Tm~(3+)/Yb~(3+)离子掺杂对材料相结构、介电性能、铁电性能和发光性能的影响。X射线衍射、拉曼光谱和透射电子显微镜结果表明，Tm~(3+)/Yb~(3+)离子扩散到PZN-9PT的晶格中，提高了PZN-9PT的晶格常数。PZN-9PT：Tm~(3+)/Yb~(3+)的居里温度T_c由纯PZN-9PT的170C提高到182.5℃。同时，Tm~(3+)/Yb~(3+)共掺PZN-9PT的矫顽场Ec达到12.1kV/cm，是PZN-9PT晶体的近4倍。在980 nm激光激发下，Tm~(3+)/Yb~(3+)修饰的晶体产生三种颜色的UC：蓝色(480 nm，1G4→3H6)、强近红外(NIR，804 nm，3H4→3H6)和弱红色(652 nm，1G4→3F4)。我们的研究结果为光电器件多功能材料的设计提供了一条新的途径。
Tm3+/Yb3+co-doped Pb(Zn1/3Nb2/3)O3–9PbTiO3(PZN–9PT) single crystals were grown by high-temperature flux technique. The effects of Tm3+/Yb3+ions doping on phase structure, dielectric, ferroelectric and UC luminescence properties were investigated. The XRD, Raman spectrum and TEM results reveal that the Tm3+/Yb3+ions can diffuse into the lattice of the PZN–9PT and increase the lattice constants. The Curie temperatureTcincreases from 170 °C for pure PZN–9PT to 182.5 °C for PZN–9PT: Tm3+/Yb3+. Meanwhile, the coercive fieldEcof Tm3+/Yb3+co-doped PZN–9PT reaches to 12.1 kV/cm which is nearly four times higher than that of PZN–9PT crystal. Under a 980 nm laser excitation, crystals modified by the Tm3+/Yb3+produce UC with three colors: blue (480 nm,1G4→3H6), strong near-infrared (NIR, 804 nm,3H4→3H6) and weak red (652 nm,1G4→3F4). Our results can provide a new way for the design of multifunctional materials used in optical-electrical devices.