 This research investigated the degradation of perovskite solar cells using impedance spectroscopy and dark current voltage, IV, curves. Impedent spectroscopy revealed that the undoped perovskite solar cells exhibited significant degradation over time, while the G-Snow II perovskite solar cells did not show any degradation. Dark IV curves confirmed the findings of impedance spectroscopy, showing that the undoped perovskite solar cells had significantly lower efficiency than the G-Snow II perovskite solar cells. By analyzing the Nyquist plots of the impedance spectroscopy data, it was found that the degradation of the undoped perovskite solar cells could be explained by a decrease in the charge carrier mobility. This study provides valuable insight into the degradation mechanisms of perovskite solar cells, which can help improve their performance. This article was authored by Alaria Matasina, Pierluigi Guerrero, Laura Lancelotti, and others. We are article.tv, links in the description below.