Microstructure morphology fine-tuning of active layer film boosts organic solar cell efficiency

The power conversion efficiency (PCE) of organic solar cells (OSCs) are demonstrated to be improved via the microstructure morphology fine-tuning of active layer films. Thanks to the appealing advantages like light weight, mechanical flexibility and roll-to-roll processability, OSCs have drawn increasing attention. As a promising power source for flexible electronic systems, they feature relatively high PCE, which still needs to be improved.