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American Chemical Society, ACS Applied Materials and Interfaces, 48(7), p. 26381-26386, 2015

DOI: 10.1021/acsami.5b08786

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Antiferroelectric Thin-Film Capacitors with High Energy-Storage Densities, Low Energy Losses, and Fast Discharge Times

Journal article published in 2015 by Chang Won Ahn ORCID, Gantsooj Amarsanaa, Sung Sik Won, Song A. Chae, Dae Su Lee, Ill Won Kim
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This paper is available in a repository.

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Abstract

In this work, we demonstrate a capacitor with high energy densities, low energy losses, fast discharge times, and high temperature stabilities, based on Pb0.97Y0.02[(Zr0.6Sn0.4)0.925Ti0.075]O3 (PYZST) antiferroelectric thin-films. PYZST thin-films exhibited a high recoverable energy density of Ureco = 21.0 J/cm(3) with a high energy storage efficiency of η = 91.9% under an electric field of 1300 kV/cm, providing faster microsecond discharge times than those of commercial polypropylene capacitors. Moreover, PYZST thin-films exhibited high temperature stabilities with regard to their energy storage properties over temperatures ranging from room temperature to 100 ℃ and also exhibited strong charge-discharge fatigue endurance up to 10(7) cycles.