An effective method to detect the Curie transition of Er3+/Yb3+ co-doped BaTiO3 ceramics by up-conversion photoluminescence intensity ratio

作者：Zuo, Qianghui; Luo, Laihui^*; Li, Weiping; Wang, Feifei

来源：Journal of Physics D: Applied Physics , 2016, 49(26): 265303.

DOI：10.1088/0022-3727/49/26/265303

• ferroelectric
• ceramics
• upconversion
• photoluminescence
• Curie transition

In this work, BaTi1-x-yO3:xEr/yYb (BTO:xEr/yYb, x = 0, y = 0; x = 0.005, y = 0.005; x = 0.01, y = 0.005; x = 0.01, y = 0.01; x = 0.015, y = 0.01) ceramics were prepared using a conventional solid-reaction method to investigate the relation between the Curie transition and up-conversion photoluminescence (UC PL) properties. We did not find that the green or red UC PL absolute intensity of Er3+ ions had any direct correlation with the Curie phase transition. However, the variation of the ratio I-g/I-r of green and red UC emission intensities with temperature has similar behavior as that of dielectric constant. An evident peak of I-g/I-r ratio was also obtained at T-C in all the BTO: xEr/yYb ceramics with different Er3+/Yb3+ co-doping contents. The present study demonstrates that UC PL intensity ratio, rather than the absolute PL intensity, is an effective optical non-contact method to detect the Curie phase transition of ferroelectrics.

• 出版日期2016-7-6
• 单位上海师范大学; 宁波大学