| Low leakage current, enhanced energy storage, and fatigue endurance in room-temperature deposited (Pb0.93La0.07)(Zr0.82Ti0.18)O3 thick films |
| Ajeet Kumar1, Geon Lee1, Atul Thakre1,2, Deepak Rajaram Patil1, Guifang Han3, Jungho Ryu1,4 |
1School of Materials Science and Engineering, Yeungnam University, Gyeongsan, 38541, South Korea
2Centre for Functional Materials, Vellore Institute of Technology, Vellore, Tamilnadu, 632014, India
3School of Materials Science and Engineering, Shandong University, Jinan, 250061, Shandong, P.R. China
4Institute of Materials Technology, Yeungnam University, Gyeongsan, 38541, Korea |
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Received: May 2, 2023; Revised: July 29, 2023 Accepted: August 4, 2023. Published online: September 19, 2023. |
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| ABSTRACT |
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This study reports the fabrication of manganese (Mn) doped antiferroelectric (AFE) thick films (thickness of ~ 2 μm) of (Pb0.93La0.07)(Zr0.82Ti0.18)O3 (PLZT 7/82/18) at room temperature using aerosol deposition (AD) technique without any additional thermal treatment. The Mn-doped PLZT 7/82/18 AD thick films demonstrate excellent energy storage and electrical properties despite being fabricated at room temperature. The dielectric properties of the PLZT AD thick films were investigated across a frequency range of 100 Hz–1 MHz and a temperature range of 25–250 ℃. The Mn-doped PLZT AD thick films exhibit a dielectric constant of ~ 108, low dielectric loss of 0.0211, and high-temperature stability of ~ 5.5% (from 1 kHz to 1 MHz). The bipolar P-E and I-E hysteresis loops of the PLZT AD thick films do not show an AFE behavior, however, resemble the paraelectric/dielectric type of loops. The Mn-doped PLZT AD thick films exhibit high dielectric breakdown strength (DBS) of ~ 5420 kV/cm, energy-storage density (ESD) of ~ 38.7 W/cm3 , with high energy efficiency of ~ 71%. Additionally, the Mn-doped PLZT AD thick films demonstrate a low leakage current and excellent fatigue properties, as indicated by the obtained polarization, DBS, ESD, and energy efficiency after 108 cycles. |
| Key words:
(Pb0.93La0.07)(Zr0.82Ti0.18)O3 · Thick films · Energy-storage capacitor · Aerosol deposition · Low-temperature deposition |
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