Exciplex-Facilitated Charge Extraction and Defect Chelation to Improve Inorganic Perovskite Solar Cells
Rational molecular engineering of the perovskite/hole transport layer interface offers a promising route to simultaneously address inefficient charge extraction, defect-mediated recombination, and lead leakage in CsPbI3–xBrx perovskite solar cells. Herein, we introduce 2,2′-dinitro-9,9′-spirobifluorene (DN-SBF) as an...