| 초록 |
We show research work that advances the field of polymer solar cells (PSCs) by studying electron-collecting interlayers and finally realizing new charge recombination layers (CRLs) for efficient inverted tandem PSCs. The first step toward the goal was a study of polymeric surface modifiers, polyethylenimine (PEIE) derivatives as electron-collecting interlayers of PSCs. The second attempt to reach the goal of this research was realization of new efficient charge recombination layers (CRLs) of inverted tandem PSCs using the polymer surface modifier, PEIE. The use of PEIE modification in CRLs offered further reduced WF of the electron-collecting layer, leading to high WF contrast between two opposite CRL surfaces. The PEIE modification provided further reduced WF on the layer below, and consequently formed an efficient and air-stable CRL. |
