In situpassivation of Pb0traps by fluoride acid-based ionic liquids enables enhanced emission and stability of CsPbBr3nanocrystals for efficient white light-emitting diodes

An efficient in situ surface passivation strategy is proposed to improve the emission performance of CsPbBr 3 NCs with the assistance of [Bmim]BF 4 , which contributes to the removal of Pb 0 deep traps and passivation of surface defects simultaneously.