Neutral amine based alcohol-soluble interface materials for inverted polymer solar cells: realizing high performance and overcoming solvent erosion

Three amino-functionalized fluorene oligomers with different solubility were developed as cathode interfacial materials for inverted polymer solar cells (I-PSCs). By side chain design, we solved the interface layer erosion problem for I-PSCs, and the devices exhibit a power conversion efficiency as high as 8.94%