DataVXAdvanced Functional MaterialsPaper
journal article·2021-10

Antiferroelectric Anisotropy of Epitaxial PbHfO3 Films for Flexible Energy Storage

Meng‐Fu Tsai, Yun‐Zhe Zheng, Si‐Cheng Lu, Jun‐Ding Zheng, Hao Pan, Chun‐Gang Duan, Pu Yu, Rong Huang, Ying‐Hao Chu

Advanced Functional Materials· Volume 31· Issue 42
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Source abstract

Abstract

Abstract Dielectric capacitors are widely studied for power supply systems because they can quickly store and release electrical energy. Among various kinds of dielectric materials, antiferroelectrics show promising features of high energy‐storage density and efficiency. In this study, epitaxial antiferroelectric PbHfO3 films with different orientations are fabricated, in which remarkable anisotropies of polarization and energy storage properties are discovered. With the optimization of film orientation, much‐improved energy density and excellent high‐temperature efficiency are achieved in the PbHfO3 films. Moreover, the PbHfO3 films are fabricated onto flexible mica substrates, which exhibit excellent property robustness against mechanical bending. This study provides a fundamental understanding of the anisotropic antiferroelectric behaviors of epitaxial PbHfO3 films and provides a generalizable pathway for flexible energy‐storage dielectric capacitors.
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Research context

OpenAlex topics: Ferroelectric and Piezoelectric Materials · Dielectric materials and actuators · Multiferroics and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and Engineering National Yang Ming Chiao Tung University Hsinchu 300093 Taiwan

Key Laboratory of Polar Materials and Devices Department of Electronics East China Normal University Shanghai 200241 China

State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics Tsinghua University Beijing 100084 China

Division of Physics and Applied Physics School of Physical and Mathematical Science Nanyang Technological University 21 Nanyang Link, 04‐01 Singapore 637371 Singapore

Center of Emergent Functional Matter Science National Yang Ming Chiao Tung University Hsinchu 300093 Taiwan

Funding

Ministry of Science and Technology, Taiwan · National Key Research and Development Program of China · National Natural Science Foundation of China

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