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JOURNAL OF SYNTHETIC CRYSTALS ›› 2021, Vol. 50 ›› Issue (1): 138-143.

• Research Articles • Previous Articles     Next Articles

Up-Conversion Luminescence Property of Er3+ Doped and Er3+/Yb3+ Co-Doped NBT-CT Lead-Free Piezoelectric Ceramics

MA Chunlin, ZHOU Yue, MA Chenyu, DONG Qianwen, WU Jin, FAN Yuxiang, ZHAI Zhangyin   

  1. School of Physics and Electronic and Electrical Engineering, Huaiyin Normal University, Huai'an 223300, China
  • Received:2020-09-30 Online:2021-01-15 Published:2021-03-01

Abstract: A series of Er3+ doped and Er3+/Yb3+ co-doped 0.96Na0.5Bi0.5TiO3-0.04CaTiO3(NBT-CT∶xEr3+/yYb3+,x=0.002~0.015, y=0.010) lead-free piezoelectric ceramics were prepared by a solid-state sintering method. The phase structure and up-conversion luminescence properties of the samples were characterized and analyzed by X-ray diffraction and fluorescence spectrofluorometer, respectively. These results show that the main crystal phase of the samples is that of NBT. Under the excitation of a 980 nm near-infrared light, the Er3+ doped and Er3+/Yb3+ co-doped NBT-CT ceramics exhibit characteristic emission of Er3+ with strong dominant green up-conversion emissions. The optimal up-conversion luminescence performance with x=0.010 in NBT-CT∶xEr3+ ceramics are obtained. Yb3+ can act as sensitizer and significantly enhance the up-conversion luminescence intensity of Er3+.

Key words: lead-free piezoelectric ceramics, Na0.5Bi0.5TiO3, Er3+/Yb3+, solid-state sintering method, up-conversion luminescence

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