Inhibition of defect-induced α-to-δ phase transition for efficient and stable formamidinium perovskite solar cells

Defects passivation is widely devoted to improving the performance of formamidinium lead triiodide perovskite solar cells; however, the effect of various defects on the α-phase stability is still unclear. Here, using density functional theory, we first reveal the degradation pathway of the formamidi... View More