Metal halide perovskites materials have gained significant research attention in the past decades as promising optoelectronic and photovoltaic materials, because of their inherently high photoluminescence quantum yield, long carrier diffusion length, high absorption coefficient, great defect tolerance and solution processibility. The emerging two-dimensional (2D) Ruddlesden-Popper (RP) phase halide perovskites inherit the desirable properties of 3D perovskites with improved environmental stability. To further improve the performance and realize extended functionalities of halide perovskite-based devices, it is of interest to explore the synthesis, fabrication, and stabilization of halide perovskite heterostructures as well as its integration with other materials, which have been challenging due to the labile nature of the materials. Particularly, the unique modular structure of 2D RP perovskites endows great tunability of the optical and electronic properties. Interfacing the diverse 2D RP perovskite with other 2D materials including graphene and transitional metal dichalcogenides (TMDs) through van der Waals (vdW) stacking potentially offers unlimited heterostructure configurations for exploration of novel physic in semiconductor heterostructures and design of high-performance applications. In this thesis, we review the progress of the above-mentioned topics, and discuss the challenges remaining and future promising directions in this field.