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 fluorine-doped tin oxide/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 and x-ray photoelectron spectroscopy 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.