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Fatigue‐Free Aurivillius Phase Ferroelectric Thin Films with Ultrahigh Energy Storage Performance
Author(s) -
Pan Zhongbin,
Wang Peng,
Hou Xu,
Yao Lingmin,
Zhang Guangzu,
Wang Jie,
Liu Jinjun,
Shen Meng,
Zhang Yujing,
Jiang Shenglin,
Zhai Jiwei,
Wang Qing
Publication year - 2020
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.202001536
Subject(s) - aurivillius , materials science , ferroelectricity , capacitor , dielectric , optoelectronics , thin film , hysteresis , film capacitor , ferroelectric capacitor , energy storage , nanotechnology , voltage , condensed matter physics , electrical engineering , power (physics) , physics , quantum mechanics , engineering
Dielectric capacitors have become a key enabling technology for electronics and electrical systems. Although great strides have been made in the development of ferroelectric ceramic and thin films for capacitors, much less attention has been given to preventing polarization fatigue, while improving the energy density, of ferroelectrics. Here superior capacitive properties and outstanding stability are reported over 10 7 charge/discharge cycles and a wide temperature range of −60 to 200 °C of ferroelectric Aurivillius phase Bi 3.25 La 0.75 Ti 3 O 12 ‐BiFeO 3 (BLT‐BFO), which represents one of the best capacitive performances recorded for the ferroelectric materials. The modification of BLT thin films with BFO overcomes the constraints of ferroelectric Aurivillius compounds and presents an unprecedented combination of the ideal features including improved polarization, reduced ferroelectric hysteresis, and lowered leakage current for high‐energy‐density capacitors. Given the lead‐free and fatigue‐free nature of this Aurivillius phase ferroelectric, this work unveils a new approach towards high‐performance eco‐friendly ferroelectric materials for electrical energy storage applications.