Piezoelectric performance regulation from 2D materials to devices

Two-dimensional piezoelectric nanomaterials provide opportunities for miniaturization of piezoelectric materials due to their atomically thick anisotropic structure and unique properties. At the same time, their applications in advanced functional devices, such as flexible electronic devices, nanosensors, and photoelectronic devices, also show outstanding prospects. Due to the flexibility and diversity of two-dimensional piezoelectric materials, they are highly attractive for advanced functional device applications. It is necessary to systematically summarize and explore the relationship between functional devices and the intrinsic and non-intrinsic piezoelectric properties of two-dimensional piezoelectric materials. This paper reviews the recent progress in the synthesis and performance control strategies of two-dimensional piezoelectric materials, as well as two-dimensional piezoelectric devices, especially the relationship between the application of two-dimensional functional devices and the different formation mechanism of piezoelectricity. Finally, it provides a prospective outlook on the directions for the application research of the two-dimensional piezoelectric field.