Perovskite is subject to ion migration — the movement of ions within the crystal lattice. When exposed to heat and light, electric fields from solar cell components cause ions within the ...

Although local defects in chloride-iodide-based perovskite are hard to avoid due to ion migration, a group of scientists have now found a way to passivate them. They used different combinations of ...

This process also suppressed ion migration and inhomogeneity in the crystallinity of the perovskite, addressing key challenges in device performance. X-ray photoelectron spectroscopy measurements ...