Critical length screening enables 19% efficiency in thick-film organic solar cells.

ABSTRACT: The commercialization of organic solar cells (OSCs) requires thick-film active layers, yet current thick-film-compatible acceptor selection based on zero-field mobility is unreliable due to methodological inconsistencies in experimental protocols, fitting models, and single-carrier device configurations. Existing literature indicates that the zero-field mobility in high-performance thick-film devices shows negligible differences compared to thin-film counterparts, thereby invalidating its significance as a selection criterion. This study introduces a protocol identifying critical length - an intrinsic property distinct from zero-field mobility - as the decisive factor for thick-film OSC performance. Comparative studies reveal that enlarged acceptor domains with high critical length yield i

SUBMITTER: Meng Y 

PROVIDER: S-EPMC12594902 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature