Efficient MAPbI₃and FA based mixed perovskite solar cells with a linear or a carbon ring based antisolvent

Area of Science:

• Materials Science
• Photovoltaics
• Chemical Engineering

Background:

• Perovskite solar cells offer a promising alternative to silicon-based photovoltaics.
• Optimizing thin-film morphology is crucial for enhancing device performance.
• Antisolvent engineering plays a significant role in controlling perovskite crystallization.

Purpose of the Study:

• To investigate the impact of different antisolvents on the material properties and photovoltaic performance of MAPbI3 and FAPbI3 based solar cells.
• To understand how antisolvent miscibility influences perovskite nucleation and crystal growth.
• To identify optimal antisolvent strategies for reproducible fabrication of high-efficiency perovskite solar cells.

Main Methods:

• Thin-film deposition of MAPbI3 and FAPbI3 perovskites.
• Utilized diethyl ether (DE) as an immiscible antisolvent and chlorobenzene (CB) as a miscible antisolvent.
• Characterization of perovskite film properties and solar cell performance.

Main Results:

• Miscible CB and immiscible DE antisolvents differentially affected nucleation kinetics and crystal growth.
• Both MAPbI3 and FAPbI3 solar cells showed improved performance with specific antisolvents (CB for MAPbI3, DE for FAPbI3).
• A power conversion efficiency of 20.8% was achieved for FAPbI3 based mixed perovskite solar cells using DE.

Conclusions:

• Antisolvent selection is critical for tailoring perovskite film quality and solar cell efficiency.
• Immiscible antisolvents like DE can lead to superior photovoltaic performance in FAPbI3 based devices.
• This study provides insights for developing scalable and reproducible fabrication processes for perovskite solar cells.