Room temperature synthesized green perovskite nanocrystals with enhanced thermal stability enabled by fluorinated ligand engineering for light-emitting diodes

FAPbBr 3 PeNCs synthesized via LARP showed superior thermal stability. CF 3 -PEA passivation reduced thermal quenching, retaining 75% PL at 380 K. PMMA encapsulation further improved stability. The champion EL device achieved a maximum EQE of 20.4%.