Phase stabilization A-site ion anchoring for ultra-stable perovskite light emitting diodes

A novel ion anchoring strategy stabilizes the perovskite phase, yielding ambient stable perovskite films and ultra-stable perovskite light-emitting diodes (PeLEDs) with an unprecedented operational half-lifetime over 37.2 years at 100 cd m −2 and exceeding 27% efficiency, marking a new stability benchmark for next-generation display and lighting applications. To enhance the operational stability of perovskite light emitting diodes (PeLEDs), 1 H ,1 H -perfluorohexylamine was employed to anchor ions and stabilize perovskite phase, yielding ambient stable film and ultra-stable PeLEDs with 37.2-year T 50 lifetime.