Go beyond the limit: Rationally designed mixed-dimensional perovskite/semiconductor heterostructures and their applications

Halide perovskite heterojunctions rationally integrate the chemical and phys-ical properties of multi-dimensional perovskites and judiciously chosen semi-conductor materials, offering the promise of going beyond the limit of a single component. This emerging platform of materials innovation offers fresh op-portunities to tune material properties, discover interesting phenomena, and enable novel applications. In this review, we first discuss the fundamentals of forming heterojunctions with perovskites and a wide range of semiconduc-tors, and then we give an overview of the research progress of halide perov-skite heterojunctions in terms of their optical, electrical, and mechanical prop-erties, focusing on how the heterojunction tunes the energy band structure, electrical transport, and charge recombination behaviors. We further outline the progress of perovskite-based heterojunctions in optoelectronics. Finally, the challenges and future research directions for perovskite/semiconductor heterojunctions are discussed.

Automated summary

Halide perovskite heterojunctions combine the properties of multi-dimensional perovskites and selected semiconductors, surpassing the limitations of a single component. This platform allows for material property tuning, discovery of interesting phenomena, and enables novel applications.