Efficient perovskite/Cu(In,Ga)Se₂ tandem solar cells with a composite intermediate recombination layer.

ABSTRACT: Monolithic perovskite/Cu(In,Ga)Se₂ (CIGS) tandem solar cells offer unique advantages among tandem configurations, including optimal bandgap pairing, all-thin-film architecture, superior radiation hardness, and exceptional stability. Despite their potential, challenges remain in optimizing efficiency and stability, particularly in the intermediate recombination layer (IRL) that connects subcells. This study addresses these challenges by developing a high-performance IRL using a composite structure comprising Al:ZnO/Au/NiO_x/[4-(7H-dibenzo[c,g]carbazol-7-yl)butyl] phosphonic acid (4PADCB). The hybrid NiO_x/4PADCB hole transport layer enhances interface trap passivation, optimizes band alignment, and improves minority carrier extraction, while the ultrathin Au l

SUBMITTER: Li W 

PROVIDER: S-EPMC12820335 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature