Issue 44, 2020

Ferroelectric-like organic–inorganic interfaces

Abstract

Since its discovery ferroelectricity has been an intriguing phenomenon in materials science and is usually observed in a single ferroelectric material. In this study, it is shown that ferroelectriciy can also occur at the interface between two non-ferroelectric materials, a polymer and silicon, and interfacial ferroelectric-like behavior is demonstrated. Sulfonic functional groups on the polymer establish electrochemically switchable dipoles, which are considered to be the origin of ferroelectric polarization and are observed in an atom-thick polar region at the interface. Above room temperature polarization hysteresis loops with long term stability, thermal stability, reliable switching reproducibility and long information retention directly on rigid and flexible silicon substrates are demonstrated. This exotic ferroelectric phenomenon extends polarization switching beyond singular materials and has the potential to advance the design of new ferroelectric devices.

Graphical abstract: Ferroelectric-like organic–inorganic interfaces

Supplementary files

Article information

Article type
Paper
Submitted
17 jul. 2020
Accepted
28 sep. 2020
First published
28 sep. 2020

J. Mater. Chem. C, 2020,8, 15677-15684

Ferroelectric-like organic–inorganic interfaces

L. Yang, J. Guo, J. Li, J. Yan, K. Ge, J. Jiang, H. Li, B. S. Flavel, B. Liu and J. Chen, J. Mater. Chem. C, 2020, 8, 15677 DOI: 10.1039/D0TC03384G

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