Researchers from the Korea Institute of Energy Technology (KENTECH), Korea Research Institute of Chemical Technology (KRICT) and Ulsan National Institute of Science and Technology (UNIST) have developed a molecularly engineered interfacial passivation strategy that significantly improves the stability, scalability and processing tolerance of perovskite solar cells. Halide perovskite solar cells remain constrained by poor durability and narrow processing windows. Conventional ammonium halide-base