压电
铁电性
纳米机电系统
材料科学
极化(电化学)
微电子机械系统
光电子学
压电系数
纳米
纳米技术
电压
复合材料
电气工程
化学
纳米颗粒
物理化学
电介质
纳米医学
工程类
作者
Nannan Liu,Xinping Zhang,Yecheng Ding,Yaojin Wang,Xubing Lu,Guoliang Yuan,Junming Liu
标识
DOI:10.1016/j.jallcom.2023.172083
摘要
Integrated nanoelectromechanical systems (NEMS) exhibit enormous potential for replacing current microelectromechanical systems in various fields, such as 5G/6G wireless communication, in the future. However, their advancement is impeded by the challenge of achieving nanometer-thick ferroelectric oxide films with a high piezoelectric coefficient of d33. Herein, the nm-thick flexible Hf0.5Zr0.5O2 (HZO) films were deposited on mica substrates, and they exhibited a remnant polarization of ≥ 8.1 μC/cm2 at 25–320 °C and a high d33 value of 37.8 pC/N at 25 °C. After the HZO films with inter-digitated electrodes were fully polarized, the flexible HZO film with a dynamic bending strain of 0.102 % at 4 Hz produced an open-circuit voltage of 1.1 V. This HZO film with strong piezoelectricity can promote the development of novel NEMS and flexible piezoelectric sensors.
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