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

摘要

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)(0.925)Ti-0.075]O-3 (PYZST) antiferroelectric thin-films. PYZST thin-films exhibited a high recoverable energy density of U-reco = 21.0 J/cm(3) with a high energy-storage efficiency of eta = 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 degrees C and also exhibited strong charge discharge fatigue endurance up to 1 x 10(7) cycles.