“…While the SPO PCEs for both types of devices were similar, the integrated J sc of ordered-perovskite devices was slightly higher, reinforcing the positive impact of crystal orientation (Figure i,j). Currently, there is a widespread discussion on improving the performance of perovskite macroscopic devices through microcrystal orientation. − Our experiments have shown that there is a strong anticorrelation between current and external bias in random-perovskite films at the microscopic level. However, the ordered-perovskite films exhibit significant improvements in current homogeneity and optoelectronic properties.…”