In Situ Copper Ions Redox Engineering Elevates Hole Transport for Efficient Perovskite Solar Cells.
Interfacial non-radiative recombination and energy-level mismatch remain critical bottlenecks for perovskite solar cells (PSCs). Here, we reported an in situ redox engineering strategy using a cobweb-like quadrangular macrocyclic copper-organic complex, Cu(II) meso-tetra(4-sulfonatophenyl) porphine [Cu(TSPPa)2], to sim...