Unconventional polarization fatigue in van der Waals layered ferroelectric ionic conductor CuInP2S6

Ziwen Zhou, Shun Wang, Zhou Zhou, Yiqi Hu, Qiankun Li, Jinshuo Xue, Zhijian Feng, Qingyu Yan, Zhongshen Luo, Yuyan Weng (), Rujun Tang, Xiaodong Su, Fengang Zheng, Kazuki Okamoto, Hiroshi Funakubo, Lixing Kang, Liang Fang () and Lu You ()
Additional contact information
Ziwen Zhou: Soochow University
Shun Wang: Soochow University
Zhou Zhou: Soochow University
Yiqi Hu: Soochow University
Qiankun Li: Soochow University
Jinshuo Xue: Soochow University
Zhijian Feng: Soochow University
Qingyu Yan: Soochow University
Zhongshen Luo: Soochow University
Yuyan Weng: Soochow University
Rujun Tang: Soochow University
Xiaodong Su: Soochow University
Fengang Zheng: Soochow University
Kazuki Okamoto: Tokyo Institute of Technology
Hiroshi Funakubo: Tokyo Institute of Technology
Lixing Kang: Chinese Academy of Sciences
Liang Fang: Soochow University
Lu You: Soochow University

Nature Communications, 2023, vol. 14, issue 1, 1-10

Abstract: Abstract Recent progress in two-dimensional ferroelectrics greatly expands the versatility and tunability in van der Waals heterostructure based electronics. However, the switching endurance issue that widely plagues conventional ferroelectrics in practical applications is hitherto unexplored for van der Waals layered ferroelectrics. Herein, we report the observation of unusual polarization fatigue behaviors in van der Waals layered CuInP2S6, which also possesses finite ionic conductivity at room temperature. The strong intertwinement of the short-range polarization switching and long-range ionic movement in conjunction with the van der Waals layered structure gives rise to unique morphological and polarization evolutions under repetitive electric cycles. With the help of concerted chemical, structural, lattice vibrational and dielectric analyses, we unravel the critical role of the synergy of ionic migration and surface oxidation on the anomalous polarization enhancement and the eventual polarization degradation. This work provides a general insight into the polarization fatigue characteristics in ionically-active van der Waals ferroelectrics and delivers potential solutions for the realization of fatigue-free capacitors.

Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.nature.com/articles/s41467-023-44132-y Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-44132-y

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-023-44132-y

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().