Enhanced Stability of Perovskite Solar Cells Using N-[(3-Dimethylamino) propyl] Methacrylamide as an Ionic Additive

Recent advancements in perovskite-type hybrid solar cells (PSCs) have driven significant interest due to their promising photovoltaic properties and potential to replace conventional silicon-based solar cells. In this work, we explore the use of N-[(3-Dimethylamino) propyl] methacrylamide as an ionic additive in MAPbI₃ PSCs with the structure FTO/TiO₂/Perovskite/spiro-OMeTAD/Ag. This additive aims to enhance device stability by reducing surface defects and mitigating degradation under environmental conditions.

Structural characterization through X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) demonstrates that the incorporation of methacrylamide improves the moisture resistance and structural integrity of the perovskite layer. Devices containing the additive exhibit reduced formation of PbI₂, even after prolonged exposure to ambient conditions, significantly enhancing stability.

These findings underscore the role of ionic additive engineering in passivating defects and preserving photovoltaic performance. This work highlights a practical approach to improving the durability of perovskite solar cells, contributing to the advancement of stable and efficient next-generation photovoltaic technologies.