Metal Halide Perovskite Nanowires: Synthesis, Integration, Properties, and Applications in Optoelectronics

1D metal halide perovskite (MHP) nanowires (NWs) have energized research interest owing to their unique characteristics; they are grain-boundary-free, efficiently transport axial carriers, in conjunction with strong radial spatial confinement. Herein, recent progress in the synthesis, integration, property characterization, and advanced optoelectronic applications of MHP NWs is systematically reviewed. The approaches to synthesize MHP NWs are mainly classified into solution-phase and vapor-phase methods, as well as the top-down technique. Meanwhile, highly ordered patterns/templates-assisted and surface-guided alignment methods are utilized to integrate MHP NWs into NW arrays. The enhanced long-term stability and superior optoelectronic properties of MHP NWs enable excellent optoelectronic device performance, where solar cells, photodetectors, image sensors, bionic eyes, light-emitting diodes, resistive random-access memories, and field-effect transistors are mainly discussed. Finally, some perspectives for further direction of exploration to improve the device performance and path ways toward their practical applications are also provided.