Tailoring energy-storage performance in antiferroelectric PbHfO3 thin films. (June 2021)

• Record Type: Journal Article
• Authors: Huang, Xian-Xiong; Zhang, Tian-Fu; Wang, Wei; Ge, Peng-Zu; Tang, Xin-Gui
• Is Part Of: Materials & design. Volume 204(2021)
• Publication Date: 2021-06
• Subjects: PbHfO3 antiferroelectric films -- Energy storage -- Thermal stability -- Fatigue endurance; Materials -- Periodicals; Engineering design -- Periodicals; Matériaux -- Périodiques; Conception technique -- Périodiques; Electronic journals; 620.11
• DOI: 10.1016/j.matdes.2021.109666
• Languages: English
• ISSNs: 0264-1275

Abstract

Abstract: Among all dielectrics, antiferroelectric (AFE) materials have attracted wide attention due to the excellent energy-storage performance. In this paper, PbHfO3 (PHO) AFE films were prepared for the first time and the microstructure, AFE property and energy-storage performance were studied. X-ray diffraction analysis indicated that annealing temperature played a key role in the crystallinity and phase composition. Due to the coexistent of fine grains and amorphous phase, PHO AFE films annealed at 650 °C displayed not only optimal energy-storage density and energy efficiency, but also excellent thermal stability and fatigue endurance. Compared with films annealed at 750 °C, the recoverable energy-storage density and energy efficiency in 650 °C annealing samples increased by 50% and 100%, respectively. These results demonstrate that PHO film is a promising candidate for applications in power electronics systems. Graphical abstract: Unlabelled Image Highlights: Novel PbHfO3 antiferroelectric films were prepared for the first time. The 650 °C annealed film has high recoverable energy storage density and energy efficiency. The energy storage performance can be improved effectively by cutting components through proper annealing process.