Rigid Symmetric Aromatic Dithiourea Passivation with Strong Intrinsic Dipole for 21.72%‐Efficient SnO2‐Based Inorganic Perovskite Solar Cells
CsPbI3‐xBrx inorganic perovskite solar cells (IPSCs) exhibit excellent intrinsic thermal stability and optoelectronic properties, showing great potential for tandem and space photovoltaics. Nevertheless, iodide oxidation and migration induce undercoordinated Pb2+ defects that act as non‐radiative recombination centers...