Effects of Er-doping on the Structure and Photoelectric Properties of 0.825K0.5Na0.5NbO3-0.175Sr (Yb0.5Nb0.5) O3 Ceramics

Yingwen Guan; Yabing Sun; Tianhao Zhao; Shaoyang Shi; Weining Fu; Shimin Liu; Hua Wang; Jiwen Xu

doi:10.1007/s11595-022-2604-1

Journal of Wuhan University of Technology Materials Science Edition ›› 2022, Vol. 37 ›› Issue (5) : 834 -839. DOI: 10.1007/s11595-022-2604-1

Advanced Materials

Effects of Er-doping on the Structure and Photoelectric Properties of 0.825K_0.5Na_0.5NbO₃-0.175Sr (Yb_0.5Nb_0.5) O₃ Ceramics

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Abstract

Multifunctional ceramics of 0.825K_0.5Na_0.5NbO₃-0.175Sr(Yb_0.5Nb_0.5)O₃- x%Er with ferroelectric, transparent and luminescent properties were obtained by doping Er. The effects of Er-doping on the structure, luminescence and electrical properties of the ceramics were studied. After Er doping, the ceramics have luminescent properties and the luminescence intensity reaches the maximum when x=0.75. The ceramics still have good light transmission, but the transmittance decreases with the increase of Er-doping content due to the change of phase structure from pseudo-cubic phase to three-phase orthogonality. The energy storage properties is also greatly improved, and the W _rec and the η of the ceramics reach the maximum value of 0.31 J/cm³ and 94.6% when x=0.25, respectively. At the same time, the maximum electro-induced strain value is 0.031%.

Keywords

KNN-Sr(Yb_0.5Nb_0.5)O₃ / up-conversion luminescence / ferroelectric / multi-function

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Yingwen Guan, Yabing Sun, Tianhao Zhao, Shaoyang Shi, Weining Fu, Shimin Liu, Hua Wang, Jiwen Xu. Effects of Er-doping on the Structure and Photoelectric Properties of 0.825K_0.5Na_0.5NbO₃-0.175Sr (Yb_0.5Nb_0.5) O₃ Ceramics. Journal of Wuhan University of Technology Materials Science Edition, 2022, 37(5): 834-839 DOI:10.1007/s11595-022-2604-1