Van der Waals layered ferroelectric CuInP₂S₆: Physical properties and device applications

Abstract

Copper indium thiophosphate, CuInP₂S₆, has attracted much attention in recent years due to its van der Waals layered structure and robust ferroelectricity at room temperature. In this review, we aim to give an overview of the various properties of CuInP₂S₆, covering structural, ferroelectric, dielectric, piezoelectric and transport properties, as well as its potential applications. We also highlight the remaining questions and possible research directions related to this fascinating material and other compounds of the same family.

Keywords

CuInP₂S₆ / van der Waals ferroelectric / phase transition / ionic conduction / piezoelectricity

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