Efficient ternary organic solar cells with suppressed nonradiative recombination via B‒N based polymer donor.

ABSTRACT: Organic solar cells (OSCs) have developed rapidly in recent years. However, the energy loss (E _loss) remains a major obstacle to further improving the photovoltaic performance. To address this issue, a ternary strategy has been employed to precisely tune the E _loss and boost the efficiency of OSCs. The B‒N-based polymer donor has been proved to process high E(T₁) and small ΔE _ST characters, which can inhibition of CT state recombination. Herin, B‒N-based polymer donor PBNT-BDD was incorporated into the state-of-the-art PM6:L8-BO binary to construct ternary OSCs. Together with the optimal morphology, the ternary device affords an impressive power conversion efficiency of 18.95% with an improved open-circuit voltage (

SUBMITTER: Pang S 

PROVIDER: S-EPMC11761936 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature