Interplay between bimolecular recombination and carrier transport distances in bulk heterojunction organic solar cells (original) (raw)

The interplay between bimolecular recombination and carrier transport distances in bulk heterojunction organic solar cells significantly influences their power conversion efficiency. This study investigates the effects of varying active layer thickness and the use of semi-transparent electrodes on device performance across different polymer/fullerene systems. Key findings reveal that increased active layer thickness beyond 100 nm leads to non-uniform local absorption profiles, which affect recombination processes and overall device efficiency. The results guide future designs of high-performance organic solar cells by emphasizing the importance of accounting for morphology and absorption characteristics.