Organic photovoltaic cell with 17% efficiency and superior processability for large-area coating

The research group from the Institute of Chemistry, Chinese Academy of Sciences, led by Prof. Jian-Hui Hou, reported that organic photovoltaic cells achieved an efficiency of 17% via fine-modification of the flexible side chains of non-fullerene acceptors. As the optimal material has a suitable solubility and a desirable morphology, when the blade-coating method was used to extend the active area (1 cm2), a high efficiency of 15.5% can be still maintained.