| 초록 |
In recent years, organic inorganic hybrid perovskite solar cells (PSCs) have achieved dramatic efficiency improvement from 3.9% to 25.5%. However, solution processed PSCs have inevitable defects on their surface, which can act as the center of carrier recombination and degrade PSCs performance. Therefore, inhibition of surface defects is an important method to obtain high-quality PSCs. Herein, a novel strategy, antisolvent engineering using multifunction additive to suppress the defects is introduced. Consequently, dripping anti-solvent with additives during coating the perovskite solution onto substrate can effectively enhance not only the performance of perovskite solar cells but also long-term stability in ambient air conditions. We believe that our findings provide a better understanding of functional group and a way for passivation method of PSCs. |
