Morphotropic Phase Boundary in Polarized Organic Piezoelectric Materials

Fangfang Gao; Xuan Zhao; Xiaochen Xun; Houbing Huang; Xiaoming Shi; Qi Li; Fang Liu; Peng Gao; Qingliang Liao; Yue Zhang

doi:10.1103/PhysRevLett.130.246801

Morphotropic Phase Boundary in Polarized Organic Piezoelectric Materials

Fangfang Gao, Xuan Zhao, Xiaochen Xun, Houbing Huang, Xiaoming Shi, Qi Li, Fang Liu, Peng Gao, Qingliang Liao^*, Yue Zhang^*

^*Corresponding author for this work

Advanced Research Institute of Multidisciplinary Science

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Designing the morphotropic phase boundary (MPB) has been the most sought-after approach to achieve high piezoelectric performance of piezoelectric materials. However, MPB has not yet been found in the polarized organic piezoelectric materials. Here, we discover MPB with biphasic competition of β and 3/1-helical phases in the polarized piezoelectric polymer alloys (PVTC-PVT) and demonstrate a mechanism to induce MPB using the compositionally tailored intermolecular interaction. Consequently, PVTC-PVT exhibits a giant quasistatic piezoelectric coefficient of >32 pC/N while maintaining a low Young's modulus of 182 MPa, with a record-high figure of merit of piezoelectricity modulus of about 176 pC/(N·GPa) among all piezoelectric materials.

Original language	English
Article number	246801
Journal	Physical Review Letters
Volume	130
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.130.246801
Publication status	Published - 16 Jun 2023

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Gao, F., Zhao, X., Xun, X., Huang, H., Shi, X., Li, Q., Liu, F., Gao, P., Liao, Q., & Zhang, Y. (2023). Morphotropic Phase Boundary in Polarized Organic Piezoelectric Materials. Physical Review Letters, 130(24), Article 246801. https://doi.org/10.1103/PhysRevLett.130.246801

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abstract = "Designing the morphotropic phase boundary (MPB) has been the most sought-after approach to achieve high piezoelectric performance of piezoelectric materials. However, MPB has not yet been found in the polarized organic piezoelectric materials. Here, we discover MPB with biphasic competition of β and 3/1-helical phases in the polarized piezoelectric polymer alloys (PVTC-PVT) and demonstrate a mechanism to induce MPB using the compositionally tailored intermolecular interaction. Consequently, PVTC-PVT exhibits a giant quasistatic piezoelectric coefficient of >32 pC/N while maintaining a low Young's modulus of 182 MPa, with a record-high figure of merit of piezoelectricity modulus of about 176 pC/(N·GPa) among all piezoelectric materials.",

author = "Fangfang Gao and Xuan Zhao and Xiaochen Xun and Houbing Huang and Xiaoming Shi and Qi Li and Fang Liu and Peng Gao and Qingliang Liao and Yue Zhang",

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AU - Gao, Fangfang

AU - Zhao, Xuan

AU - Xun, Xiaochen

AU - Huang, Houbing

AU - Shi, Xiaoming

AU - Li, Qi

AU - Liu, Fang

AU - Gao, Peng

AU - Liao, Qingliang

AU - Zhang, Yue

PY - 2023/6/16

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N2 - Designing the morphotropic phase boundary (MPB) has been the most sought-after approach to achieve high piezoelectric performance of piezoelectric materials. However, MPB has not yet been found in the polarized organic piezoelectric materials. Here, we discover MPB with biphasic competition of β and 3/1-helical phases in the polarized piezoelectric polymer alloys (PVTC-PVT) and demonstrate a mechanism to induce MPB using the compositionally tailored intermolecular interaction. Consequently, PVTC-PVT exhibits a giant quasistatic piezoelectric coefficient of >32 pC/N while maintaining a low Young's modulus of 182 MPa, with a record-high figure of merit of piezoelectricity modulus of about 176 pC/(N·GPa) among all piezoelectric materials.

AB - Designing the morphotropic phase boundary (MPB) has been the most sought-after approach to achieve high piezoelectric performance of piezoelectric materials. However, MPB has not yet been found in the polarized organic piezoelectric materials. Here, we discover MPB with biphasic competition of β and 3/1-helical phases in the polarized piezoelectric polymer alloys (PVTC-PVT) and demonstrate a mechanism to induce MPB using the compositionally tailored intermolecular interaction. Consequently, PVTC-PVT exhibits a giant quasistatic piezoelectric coefficient of >32 pC/N while maintaining a low Young's modulus of 182 MPa, with a record-high figure of merit of piezoelectricity modulus of about 176 pC/(N·GPa) among all piezoelectric materials.

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Morphotropic Phase Boundary in Polarized Organic Piezoelectric Materials

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