  Ferroelectric and two-dimensional materials are both heavily investigated
classes of electronic materials. This is unsurprising since they both have
superlative fundamental properties and high-value applications in computing,
sensing etc. In this Perspective, we investigate the research topics where 2D
semiconductors and ferroelectric materials both in 2D or 3D form come together.
2D semiconductors have unique attributes due to their van der Waals nature that
permits their facile integration with any other electronic or optical
materials. In addition, the emergence of ferroelectricity in 2D monolayers,
multilayers, and artificial structures offers further advantages since
traditionally ferroelectricity has been difficult to achieve in extremely
thickness scaled materials. In this perspective, we elaborate on the
applications of 2D materials + ferroelectricity in non-volatile memory devices
highlighting their potential for in-memory computing, neuromorphic computing,
optoelectronics, and spintronics. We also suggest the challenges posed by both
ferroelectrics and 2D materials, including material/device preparation, and
reliable characterizations to drive further investigations at the interface of
these important classes of electronic materials.
