Surface Passivation Suppresses α-Particle-Induced Trap Formation in Perovskite Solar Cells for Space Applications
α-Particles represent the second most abundant ionic species in space radiation, yet their specific degradation mechanisms and mitigation strategies in perovskite solar cells (PSCs) remain unquantified. Here, we evaluate the degradation of PSCs under 2.5 MeV α-particle irradiation and investigate the protective role...