Impact of Diethyl Ether and Chlorobenzene Antisolvent Treatments on High-Performance MAPbI3 and FAPbI3 Perovskite Solar Cells

Anjali Chandel^1*, Sheng Hsuing Chang¹

* Presenter:Anjali Chandel, email:anjalichandel62@gmail.com

We investigated the role of the antisolvents in the nucleation kinetics of perovskite precursor solutions and their residual influence on perovskite crystal growth, film formation, and photovoltaic performance. Through XRD, AFM, PL, Absorbance and Contact angle analysis on MAPbI3 perovskite and the FA based multiple-cation perovskite, we qualitatively evaluated the impact of used active material and antisolvent on the phase composition and microstructure of the films. By using miscible antisolvent with high boiling point (chlorobenzene) and immiscible antisolvent with low boiling point (diethyl ether), we compared the photovoltaic performance of two widely used perovskite films. When using diethyl ether (DE) to replace chlorobenzene(CB) as an antisolvent, the power conversion efficiency (PCE) of 20.8% can be achieved in the FA based perovskite solar cells. The conclusions from this study should assist in establishing reproducible fabrication processes and finding better antisolvent candidates for various perovskite solar cells.

Keywords: Antisolvent, FAPbI3, chlorobenzene, diethyl ether, MAPbI3