Effects of aromatic compounds as interfacial layer materials on the performance of perovskite solar cells

• Published in: Journal of power sources 2025-01, Vol.626, p.235731, Article 235731
• Main Authors: He, Wenkai, Lan, Cheng, Zhou, Yancheng, Li, Ran, Guli, Mina
• Format: Article
• Language: English
• Subjects: Aromatic compounds; Interface modification; Perovskite solar cells; Photoelectric performance; Stability
• ISSN: 0378-7753
• DOI: 10.1016/j.jpowsour.2024.235731

In recent years, perovskite solar cells (PSCs) have developed rapidly, but the large number of defects at their interfaces hindering further improvement of their efficiency and stability. Among various coping strategies, interface engineering is considered as the direct and effective method for passivating interface defects. After years of research by researchers, aromatic compounds are currently the most widely used materials for interface engineering. Therefore, this article introduces the properties of various aromatic compounds and their applications in PSCs and analyzes their significant passivation effects. Furthermore, we summarize their effects on the open circuit voltage (VOC), fill factor (FF), humidity stability, and thermal stability of PSCs based on the various types of aromatic compounds. Finally, the application prospects of aromatic compounds were discussed. Based on their highly controllable structural design, we believe that, in the future, specific structural design of aromatic compounds can be used to accurately improve certain aspects of the performance of perovskite devices. •This article reviews the application of aromatic compounds in interface modification.•Pyridine, imidazole, and benzene derivatives can enhance the VOC of PSCs.•The amino groups of aromatic compounds can significantly improve the FF of PSCs.•Compounds containing P, N, S, and O can improve the thermal stability of PSCs.•Hydrophobic groups of aromatic compounds can improve the humidity stability of PSCs.