Energy storage and polarization switching kinetics of (001)-oriented Pb0.97La0.02(Zr0.95Ti0.05)O3 antiferroelectric thick films
Energy storage and polarization switching kinetics of (001)-oriented Pb0.97La0.02(Zr0.95Ti0.05)O3 antiferroelectric thick films
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(001)取向Pb0.97La0.02(Zr0.95Ti0.05)O3反铁电厚膜的储能和极化切换动力学
DOI：
10.1063/1.4944645
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发表时间：
2016-03
期刊：
影响因子：
--
通讯作者：
J.-M. Liu
中科院分区：
文献类型：
--
作者：
C. Liu;S. X. Lin;M. H. Qin;X. B. Lu;X. S. Gao;M. Zeng;Q. L. Li;J.-M. Liu
对于反铁电（AFE）能量存储，能量存储密度和转换效率对于宽温度（T）范围和宽频率（f）带的稳定性是高度优选的。本文研究了溶胶-凝胶法制备的具有（001）织构的AFE Pb 0.97La 0.02（Zr 0.95Ti 0.05）O3（PLZT 2/95/5）厚膜的储能特性和相关的极化反转动力学。在1.85MV/cm电场和室温下，可恢复储能密度（Wre）为1.26.8J/cm ~ 3，能量转换效率（η）高达1.62.5%。Wre和η两者在高达280 °C时仅弱地依赖于T，并且在20 Hz至10 kHz的范围内弱地依赖于f。高的频率稳定性源于成核限制开关理论所确定的快速极化开关，表明特征开关时间短至103 ns，有利于脉冲储能的应用。
For antiferroelectric (AFE) energy storage, the stability of energy storage density and conversion efficiency against wide temperature (T) range and broad frequency (f) band is highly preferred. In this work, we investigate the energy storage and associated kinetics of polarization switching in (001)-textured AFE Pb0.97La0.02(Zr0.95Ti0.05)O3 (PLZT 2/95/5) thick films prepared by sol-gel method. A recoverable energy storage density (Wre) of ∼26.8 J/cm3 and an energy conversion efficiency (η) as high as ∼62.5% have been obtained under an electric field of 1.85 MV/cm and room temperature. Both the Wre and η are only weakly T-dependent up to 280 °C and weakly f-dependent ranging from 20 Hz to 10 kHz. The high frequency stability originates from the rapid polarization switching as identified by the nucleation-limited-switching theory, suggesting a characteristic switching time as short as ∼3 ns, favorable for applications in pulse energy storage.
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