Aggregation-Induced Emission Molecular Design for Mitigating Non-Radiative Energy Loss in Organic Solar Cells.

ABSTRACT: Non-radiative energy loss remains a critical bottleneck limiting the open-circuit voltage (V_OC) and efficiency of organic solar cells (OSCs). Here, we introduce a molecular design strategy that leverages aggregation-induced emission (AIE) to suppress aggregation-caused quenching and enhance solid-state photoluminescence quantum yield (PLQY), thereby mitigating non-radiative recombination. A prototypical AIE motif, tetraphenylethylene, was incorporated into the terminal group of a Y-series non-fullerene acceptor to yield dTPE, which exhibits distinct AIE characteristics not previously observed in high-performance Y-series acceptors. Photoluminescence studies reveal that dTPE achieves a threefold enhancement in PLQY compared to L8BO-C4 in the film, leading to an electroluminescenc

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC12933007 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature