Enhancing FAPbI3 perovskite solar cell performance with a methanesulfonate-based additive

• Main Authors: Foong, Joseph Japheth Yeow Wan, Dewi, Herlina Arianita, Zhumekenov, Ayan A., Febriansyah, Benny, Bruno, Annalisa, Salim, Teddy, Tay, Darrell Jun Jie, Abuzeid, Hesham R., Koh, Teck Ming, Mhaisalkar, Subodh Gautam, Mathews, Nripan
• Other Authors: School of Materials Science and Engineering
• Format: Article
• Language: English
• Published: 2024
• Subjects: Chemistry; Engineering; Perovskite; Solar cell; Formamidinium
• Online Access: https://hdl.handle.net/10356/175532
• Institution: Nanyang Technological University

We present a strategy to simultaneously enhance the efficiency and stability of perovskite solar cells by introducing a new pseudo-halide additive based on formamidinium methanesulfonate (FAMeSf). The optimal additive concentration of 2 mol% leads to improved efficiency of over 21% and superior stability of unencapsulated cells for over 3000 hours of storage time under near-ambient conditions. Our results highlight the importance of additive engineering in boosting the performance of FAPbI3 perovskite solar cells.