Experimental Realization of Mixed-Dimensional 1D-Graphyne-Nanowires/2D-AgTe-Monolayer Heterostructures
The precise and controllable synthesis of one-dimensional (1D) and two-dimensional (2D) heterostructures, coupled with the manipulation of their atomic and electronic configurations, is of paramount significance. However, due to the synthetic challenges associated with graphyne (GY) materials, their integration into 1D/2D heterostructures remains considerably difficult. Herein, we demonstrate a post-synthetic intercalation strategy for tellurium onto Ag(111), enabling the controllable fabrication of 1D-GY-nanowire/2D-AgTe-monolayers heterostructures. Scanning-probe microscopies are employed to characterize morphological evolution during the intercalation process. Scanning tunneling spectroscopy results confirm that AgTe monolayer intercalation induces interfacial decoupling of the graphyne nanowires. Density functional theory calculations demonstrate that work function-driven Fermi level modulation via interfacial charge engineering assigns the 1D-GY-nanowire/2D-AgTe-monolayers heterostructures as type-I heterostructures. Our work not only significantly advances the fundamental understanding of interfacial interactions in 1D/2D heterostructures but also presents a scalable strategy for designing heterostructures with tailored electronic functionalities, thereby opening new avenues for applications in advanced nanoelectronics and optoelectronic devices.