Ultrapure Green High Photoluminescence Quantum Yield from FAPbBr₃ Nanocrystals Embedded in Transparent Porous Films.

ABSTRACT: Achieving highly transparent and emissive films based on perovskite quantum dots (PQDs) is a challenging task since their photoluminescence quantum yield (PLQY) typically drops abruptly when they are used as building blocks to make a solid. In this work, we obtain highly transparent films containing FAPbBr₃ quantum dots that display a narrow green emission (λ = 530 nm, full width at half-maximum (FWHM) = 23 nm) with a PLQY as high as 86%. The method employed makes use of porous matrices that act as arrays of nanoreactors to synthesize the targeted quantum dots within their void space, providing both a means to keep them dispersed and a protective environment. Further infiltration with poly(methyl methacrylate) (PMMA) increases the mechanical and chemical stability of the ensembl

SUBMITTER: Romero-Perez C 

PROVIDER: S-EPMC10389805 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature