Addition of N-(2-Aminoethyl)naphthalimide and Mercaptopropionic Acid to Increase the Stability of CsFAMA Perovskite Solar Cells

Author(s)

Moral, Raphael F. ; Hermsdorff, Alden B. ; Marchezi, Paulo E. ; Germino, Jose C. ; Bonato, Luiz B. ; de Araujo, Francineide L. ; Nogueira, Ana F.

• Document type: Journal article
• Source: Journal of the Brazilian Chemical Society; v. 33, n. 8, p. 11-pg., 2022-08-01.

Abstract

Sustainable energy generation has been a growing concern worldwide due to the alarming effects of climate changes in the last few decades. In this scenario, perovskite solar cells hold great promise in contributing for a greener global energy matrix. Despite the great potential of this technology, several difficulties to deploy perovskite solar panels are yet to be overcome, being their long-term stability one of the most critical. In this sense, this work offers an alternative to improve the long-term, operational stability of the devices by passivating the CsFAMA perovskite active layer with a mixture of N-(2-aminoethyl)naphthalimide and mercaptopropionic acid. These modifications improved the perovskite and device stability under ambient conditions. The solar cells without encapsulation and with post-treatment with 5 mM modifier solution retained ca. 90% of its initial power conversion efficiency (PCE) after 500 h exposed to ambient conditions, while standard solar cells retained ca. 58%. Our approach offers a simple new method to improve the stability of perovskite solar cells using an unexplored combination of passivating molecules. (AU)

• FAPESP's process: 21/13262-0 - Synthesis of Novel Perovskite Nanostructures
• Grantee: Luiz Gustavo Bonato
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 17/11986-5 - Generation and storage of New Energy: bringing technological development for the country
• Grantee: Ana Flávia Nogueira
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 19/25765-6 - In situ experiments with synchrotron based SAXS and WAXS to probe reactions and formation mechanisms of trending (nanostructured) lead halide materials
• Grantee: Raphael Fernando Moral
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 20/14451-8 - From small to large-area: a systematic study for the scale-up of perovskite solar cells
• Grantee: Francineide Lopes de Araújo
• Support Opportunities: Scholarships in Brazil - Post-Doctoral