All polymer ligand strategy enables highly stable spectra-pure green-emitting perovskites.

ABSTRACT: Stabilizing perovskite nanocrystals (PNCs) has been a hot topic since last decade. To avoid defect formation under ambient conditions it is crucial to protect crystal lattice using enhanced surface passivation. Polymers are one of the most promising materials for protection of PNCs and generally used along with conventional ligands. In this work we demonstrate all polymer ligands-based strategy to achieve highly stable, spectra-pure green-emitting PNCs of CsPbBr3 at room temperature. We employ combination of Polyvinylpyrrolidone (PVP) and Polyethylene glycol (PEG) polymers without the use of conventional Oleic acid and Oleylamine ligands. PNCs synthesized with only PVP emit bluish green weak PL intensity. Upon addition of PEG, PNCs exhibit giant PL enhancement and PL spectra shifted toward

SUBMITTER: Fulari AV 

PROVIDER: S-EPMC12379223 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature