| 초록 |
Since the discovery of perovskite solar cells (PSCs) that are cheap to manufacture and have a high efficiency, it is expected that PSCs will replace silicon solar cells in the near future. One method to achieve higher efficiency of PSCs is to produce a flat and uniform perovskite film. However, it is difficult to obtain such a film through typical processing methods, so a new process known as solvent engineering has recently emerged. This method allows us to be able to get a denser and more uniform perovskite film than ever before. Here, we have used this method to observe the changes in the morphology of the MAPbI3 perovskite film and the efficiency of the PSCs by adjusting the dripping amount of toluene, a typical solvent used in solvent engineering. Also, we could determine the ideal amount required to fabricate the perovskite film with a certain morphology that displayed the highest efficiency. These results show the relationship between perovskite film morphology and perovskite device performance. |
