According to a paper published in ScienceDirect, researchers have developed a lead carbanion complex that significantly improves the efficiency and stability of inverted perovskite solar cells. By forming a strong Pb–C− bond between the carbanion and the perovskite surface, this passivation reduces surface defects and enhances the photovoltaic performance of the solar cells. The devices achieved a power conversion efficiency of 25.16% with an open-circuit voltage of 1.17 V and a minimal voltage loss of 0.38 V. The lead carbanion passivation also ensured long-term stability, allowing the solar cells to maintain high performance for over 600 hours and a lifespan of over 90 days in air without encapsulation. This research introduces a new class of passivators that improve both the efficiency and durability of perovskite solar cells, making them a more viableoption for future energy production.