| 초록 |
For the commercialization of polymer solar cells (PSCs) through solution process, toxic halogenated solvents such as chloroform and chlorobenzene should be replaced with greener solvents. In this regard, ethanol and water can be considered the most eco-friendly solvents. To impart the processability of active materials in those solvents, non-ionic polar oligoethylene glycol (OEG) side chains were utilized instead of conventional hydrophobic alkyl side chains. Herein, we developed naphthalene diimide (NDI)-based polymer acceptors with symmetric and asymmetric side chains of similar length, respectively, in order to optimize the processability and device performance. Also, the effect of side chain engineering on the properties of the polymers and the performance of aqueous-processed PSCs were investigated. |
