Nanocrystal-tailored recombination for all-perovskite tandem solar modules

The commercialization of all-perovskite tandem solar modules is hindered by the reliance on the conventional gold-based tunnel recombination junction (TRJ) 1,2 . Specifically, this TRJ introduces substantial near-infrared parasitic absorption 3 and suffers from interfacial instability 4 , limiting both photocurrent generation and operational durability. …