Journal Article perovskite solar cells all-in-one devices binary modulation system buried metal grids catalyst‐like system contact diffusion lithography double-heterojunction refinement formation kinetics harvesting-storage-utilization systems homogeneity interface engineering inverted perovskite solar cells large-area devices lateral phase heterojunction light-emitting perovskite solar cells mechanochemistry micro‐optoelectronics multiscale structure parallel connection perovskite light‐emitting diode pure-phase perovskite powder stable storage transparent conducting electrodes two-step sequential deposition