Excellent Low-E Energy Storage and Fluorescence Temperature Sensing Features in Bi0.5na0.5tio3-Based Transparent Ceramics

材料科学 陶瓷 荧光 储能 光电子学 低能 透明陶瓷 光学 复合材料 物理 功率(物理) 原子物理学 量子力学
作者
Xiangfu Zeng,Jinfeng Lin,Qifa Lin,Yourong Wu,Xiao Wu,Min Gao,Chunlin Zhao,Tengfei Lin,Laihui Luo,Cong Lin
标识
DOI:10.2139/ssrn.4717463
摘要

Transparent dielectric ceramics with ultrafast discharge rates and gigantic power densities are ideal candidates for transparent pulse capacitors (TPCs). However, the requirement of a high external electric field and inferior temperature stability hinder practical applications. (Bi0.5Na0.5)TiO3-based ceramics exhibit large polarization and two characteristic dielectric peaks, easy to obtain high energy-storage density under low electric fields (low-E) and maintain stable energy-storage performance (ESP) within a wide temperature range. However, their low optical transmittance (T%) limits their development into TPCs. In this work, to concurrently obtain high T% and excellent ESP and stability under low-E conditions, we propose a collaborative optimization strategy for determining the regulations of grain size, bandgap energy and domain structure. The results show that the pellucidity and energy-storage characteristics improve with decreasing grain and domain sizes. A relatively high T% of 45.6% (at 710 nm) and recoverable energy-storage density (Wrec ~3.46 J cm-3 at 197 kV cm-1) are obtained for the (1-x)[0.85(Bi0.5-3yNa0.5-yYb3yHoyTiO3)-0.15SrZrO3]-xBaHfO3 ceramics. Additionally, the dielectric temperature stability also results in splendid storage temperature stability (ΔWrec/Wrec < 3.1% in the range of 0-200°C). Importantly, codoping Ho/Yb in the ceramics induces excellent fluorescence temperature sensing feature. The multifunctional TPCs have application potential in the field of search and rescue signal transmission, providing ideas for developing novel optoelectronic devices.
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