Concretized structural evolution supported assembly-controlled film-forming kinetics in slot-die coated organic photovoltaics.

ABSTRACT: Bulk-heterojunction structured small-area organic solar cells are approaching 20% power conversion efficiency, but the blurred film-forming kinetics in the fabrication of large-area devices causes significant PCE loss and restrains the potential of commercialization. Such blurring came from insufficient knowledge of structural evolution during the film-forming process. Here, we concretize the evolution process with structures detailed to the submolecular level by comprehensive investigations of in-situ UV-vis spectroscopy, Atomic Force Microscope, Grazing Incident Wide Angle X-ray Scattering, and molecular dynamic simulation. With such hierarchical structural knowledge, assembly-controlled film-forming kinetics is proposed to explain the whole picture. Such assembly is determined by molecu

SUBMITTER: Zhang H 

PROVIDER: S-EPMC10562442 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature