Lanthanide-Ion-Doping Effect on the Morphology and the Structure of NaYF₄:Ln³⁺ Nanoparticles.

ABSTRACT: Two series of β-NaYF₄:Ln³⁺ nanoparticles (Ln = La-Nd, Sm-Lu) containing 20 at. % and 40 at. % of Ln³⁺ with well-defined morphology and size were synthesized via a facile citric-acid-assisted hydrothermal method using rare-earth chlorides as the precursors. The materials were composed from the particles that have a shape of uniform hexagonal prisms with an approximate size of 80-1100 nm. The mean diameter of NaYF₄:Ln³⁺ crystals non-monotonically depended on the lanthanide atomic number and the minimum size was observed for Gd³⁺-doped materials. At the same time, the unit cell parameters decreased from La to Lu according to XRD data analysis. The diameter-to-length ratio increased from La to Lu in both studied series. The effe

SUBMITTER: Bogachev NA 

PROVIDER: S-EPMC9457563 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature