Unlocking Perovskite Efficiency: HFIPS Strategy

• Discover the new strategy to homogenize and increase efficiency of perovskite films! A team of experts has revealed that adjusting the Cs+/FA+ ratio can tie the existing record of 26.1% conversion efficiency.

The results revealed that the Cs+ ions significantly inhibited the growth of the FA+ ions, thus causing phase segregation in the film.
The team proposed and verified a strategy to homogenize the perovskite film and increase its conversion efficiency. By controlling the Cs+/FA+ ratio, they were able to inhibit the inhomogeneity, and eventually obtained a conversion efficiency of 26.1%, tying the existing record. This work provides new insight into the phase behavior of perovskite films and offers an effective technique for improving the efficiency of solar cells.

How Can The Cs+/FA+ Ratio Improve Efficiency of Solar Cells?

• Increasing the Cs+/FA+ ratio is an effective technique to improve the efficiency of solar cells.
• This technique allows for the homogenization of the perovskite film, reducing inhomogeneities and improving energy conversion efficiency.
• The Cs+ ions can significantly inhibit the growth of the FA+ ions, preventing phase segregation in the film.
• Controlling the Cs+/FA+ ratio can lead to a maximum energy conversion efficiency of 26.1%.
• This research provides new insight into the phase behavior of perovskite films, which can help scientists and engineers to further improve the efficiency of solar cells.