Akademik Veri Yönetim Sistemi
Joule, cilt.10, sa.3, 2026 (SCI-Expanded, Scopus)
Organic molecules are widely employed for defect passivation in high-performance perovskite solar cells. However, the organic passivation layers have weak interactions within the layer and at the perovskite interface, making them vulnerable to degradation by heat, moisture, or light, which accelerates perovskite decomposition and harms device stability. By contrast, inorganic passivation layers possess inherent chemical stability and form stronger interfacial bonds, preventing the intrusion of moisture and oxygen. In this work, an inorganic passivation strategy is established via an in situ reaction between ammonium chromate and the perovskite layer, resulting in a robust and durable Pb–O–Cr inorganic interfacial layer. The strong chemical bonding at the interface effectively suppresses perovskite degradation under operational conditions. As a result, inverted perovskite solar cells incorporating this inorganic passivation achieved a power conversion efficiency of 26.3%. Notably, the devices retain over 91% of their initial efficiency after 2,750 h of continuous illumination (AM 1.5G).