“…Organic–inorganic hybrid lead halide perovskite materials have been widely used to develop various types of optoelectronic applications, such as solar cells, light‐emitting diodes, lasers, humidity/photodetectors, photocatalysis, and so on. [ 1–5 ] Perovskite solar cells (PSCs) are considered to be an excellent emerging technology for the next generation thin‐film photovoltaic due to their promising optoelectronic characteristics, including high optical absorption coefficient, large carriers’ diffusion lengths, tunable bandgap, and lower exciton binding energy, etc. [ 6–10 ] Owing to regulating different compositions of perovskite materials, device configurations, and deposition techniques, the device performance of PSCs remarkably improved from 3.8% to the updated certified value of 25.2%, competing the performance of commercialized silicon solar cells.…”