Metal Halide Perovskites Functionalized by Patterning Technologies

Metal halide perovskites (MHPs), as emerging stars, are greatly attracted due to their superior optical and optoelectrical properties. The design and construction of patterned materials have been considered as a powerful tool to improve the performance of optical and optoelectronic devices. Therefore, the marriage of MHPs and patterning technologies is expected to boost the development of perovskite-based applications with novel functions and optimized properties. Moreover, with the merits of patterning technologies, integrated and small-sized perovskite-based optoelectronic devices with compactness are foreseen. In this review, recent progress in this field is summarized, including template-assisted and template-free patterning technologies that can endow MHPs with high crystallinity, long-term stability, and special structures. Besides, the advantages and mechanisms of patterned MHPs toward high-performance applications are discussed