Patterned Perovskites for Optoelectronic Applications

As a mature strategy for constructing microstructures, patterning technologies are widely used in the optoelectronic field to satisfy the requirements of functional and/or aesthetic purposes. With the emergence of organic-inorganic hybrid perovskites, applying patterning technologies to perovskites can further optimize the properties of perovskite-based optoelectronic devices, thereby enhancing their competitiveness in commercialization. To date, a series of perovskite patterning methods and patterned devices have been reported consecutively, which exhibit potential value and application prospects in the fields of optoelectronics, light-emitting devices, building of integrated photovoltaic systems, etc. Here, the recent progress in perovskite patterning technologies is systematically summarized, divided into two major categories: indirect patterning and direct patterning. In addition, the merits of the patterning methods and their applications in optoelectronics are discussed.