Interfacial Polarization Enhanced Ultrafast Carrier Dynamics in Ferroelectric CuInP2S6

ions. Additionally, the intralayer carrier recombination within CIPS is significantly accelerated by 2 orders of magnitude upon the formation of heterojunctions with graphene. The carrier dynamics exhibit clear dependence on interfacial polarizations, thereby facilitating the spatial separation of photoinduced carriers. The findings lay the groundwork for future investigation of 2D ferroelectric materials, paving the way for ferroelectric memory and computing technology for industrial applications.