Towards non-blinking and photostable perovskite quantum dots.

ABSTRACT: Surface defect-induced photoluminescence blinking and photodarkening are ubiquitous in lead halide perovskite quantum dots. Despite efforts to stabilize the surface by chemically engineering ligand binding moieties, blinking accompanied by photodegradation still poses barriers to implementing perovskite quantum dots in quantum emitters. To date, ligand tail engineering in the solid state has rarely been explored for perovskite quantum dots. We posit that attractive intermolecular interactions between low-steric ligand tails, such as π-π stacking, can promote the formation of a nearly epitaxial ligand layer that significantly reduces the quantum dot surface energy. Here, we show that single CsPbBr₃ quantum dots covered by stacked phenethylammonium ligands exhibit nearly non-blink

SUBMITTER: Mi C 

PROVIDER: S-EPMC11696258 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature