TMSI–TOP: a dual-function precursor for anion exchange and surface passivation via phosphonium iodide formation in CsPb(Br/I) 3 perovskite nanocrystals
This research aims to explore a dual-function precursor for enhancing stability and performance in perovskite nanocrystals.
Synthesis of TMSI–TOP precursor
Formation of phosphonium iodide
Defect passivation with TMSOH
Evaluation of LEDs' external quantum efficiency
Stable red CsPb(Br/I)3 nanocrystals achieved
External quantum efficiency of 21.69% recorded at 669 nm
LEDs demonstrated verified reliability.
Abstract
A novel TMSI–TOP precursor enables stable red CsPb(Br/I) 3 PeNCs, where phosphonium iodide forms and TMSOH aids defect passivation, yielding LEDs with 21.69% EQE at 669 nm and verified reliability.