1. Enhanced energy storage and photoluminescence properties in ErBiO3-doped (Na0.5Bi0.5)TiO3-SrTiO3 ceramics.
- Author
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Wu, Chen, Qiu, Xiaoming, Chen, Luyao, Liu, Changyi, Cheng, Wenxuan, Bing, Xiaohu, Zhao, Hongwei, Ge, Wenwei, Liu, Zhaodong, and Yao, Mingguang
- Subjects
PHOTOLUMINESCENCE ,CERAMICS ,SCANNING electron microscopy ,RAMAN spectroscopy ,ELECTRIC fields ,ENERGY storage - Abstract
(1-x)(0.75Na
0.5 Bi0.5 TiO3 -0.25SrTiO3 )-xErBiO3 (NBST-xEB, x = 0–0.04) ceramics were fabricated through a solid state reaction method. Scanning electron microscopy investigation shows that grain size of the ceramics decreases with increasing x. X-ray diffraction results reveal that all the ceramics are pseudocubic phase. An enhanced disordering of local structure by EB doping is revealed by Raman spectra. The NBST-xEB ceramics exhibit excellent dielectric stability within a wide temperature range after EB doping. A relatively high recoverable energy storage density (Wrec ) of 1.834 J/cm3 with efficiency (η) of 71% are obtained for NBST-0.02 EB ceramics under a moderate electric field of 148 kV/cm. The Wrec and η of the NBST-0.02 EB ceramics exhibit excellent fatigue stability (104 ) and temperature stability (Wrec > 0.834 J/cm3 , η > 64%) within 30–200 °C under 100 kV/cm. With the introduction of EB, the NBST-xEB ceramics also show strong photoluminescence properties due to the presence of Er3+ . [ABSTRACT FROM AUTHOR]- Published
- 2022
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