WAN Ping 1, YU Feng 1, LUO Wenqin 1, SUN Li 1, HE Yongtao 1
(1. Jingdezhen Ceramic Institute, Jingdezhen 333403, Jiangxi, China; 2. Jiangxi Guanyi Grinding Co., Ltd., Fengxin 330700, Jiangxi, China)
Abstract: In recent years, up-conversion luminescence of rare earth doped bismuth layered ferroelectrics (BLSFs) has attracted wide attention in the academic community. In particular, the availability of Bi4Ti3O12 in the form of single crystal, grain orientation/texture ceramics and glass ceramics has prompted further research on up-conversion (UC) luminescence. Bi4-0.05Er0.05Ti3O12 bismuth layered piezoelectric ceramics were prepared by solid-state method. The effects of sintering temperature on the upconversion luminescence properties of the ceramics were studied by XRD, SEM and F-4500FL photometer. It was found that the ceramic samples sintered at 950 °C, 1000 °C, 1050 °C, 1100 °C and 1150 °C were single orthogonal phases. The sintering temperature has important influence on the UC luminescent properties. Within a certain range of sintering temperature, with the increase of the sintering temperature, the grain size becomes larger, the layered characteristics become more obvious, the porosity decreases significantly, and the UC luminescence intensity increases. When the sintering temperature is higher than 1150 °C, the UC luminescence intensity decreases sharply, which is related to the increase of the volatilization of Bi3+ at high temperature.
Key words: sintering temperature; up-conversion; Bi4Ti3O12