| 초록 |
The perovskite solar cell achieved a current maximum efficiency of 25.7% from an efficiency of 3% in 2006. Although we are close to commercialization in terms of efficiency, there are still challenges to be solved in order for perovskite solar cells to be commercialized. One of the advantages of perovskite solar cells is that they are manufactured through a solvent engineering. A solvent is used to dissolve perovskite. And an anti-solvent with lower solubility than solvent is used to improve the crystallinity and morphology of perovskite. As an anti-solvent, diethyl ether, toluene, etc. are used. They are toxic and harm the environment or the health of workers. Therefore, alternatives to these solvents is needed prior to the commercialization of perovskite solar cells. Here, the solvent was selected in consideration of the solvent's boiling point, dielectric constant, donor number, and Hansen solubility parameter. Then, the film was evaluated and a device was fabricated. |
