Mutual stabilization strategy enables efficient and durable perovskite solar cells. (IMAGE)
Caption
Mutual stabilization strategy enables efficient and durable perovskite solar cells. Schematic illustration and performance summary of a hybrid–inorganic bilayer perovskite architecture. An ultrathin cubic CsPbI₃ capping layer is deposited on black-phase FAPbI₃, where close lattice matching enables mutual phase stabilization and suppresses ion diffusion at the interface. Compared with conventional 3D and 3D/2D-treated devices, the bilayer structure delivers markedly higher power conversion efficiency and greatly enhanced operational stability, retaining over 94% of its initial efficiency after more than 1,100 hours of continuous operation at 85 °C under simulated sunlight.
Credit
Xiong Li, et al.
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CC BY-NC-ND