Synthesis, Optical Properties, and Sensing Applications of LaF₃:Yb³⁺/Er³⁺/Ho³⁺/Tm³⁺ Upconversion Nanoparticles.

ABSTRACT: Herein, we successfully synthesized a series of LaF₃:Yb³⁺/Er³⁺/Ho³⁺/Tm³⁺ upconversion nanoparticles (UCNPs) and LaF₃:Yb³⁺_0.20, Er³⁺_0.02@LaF₃:Yb³⁺_0.20 core/shell UCNPs by modifying the amount of NaOH and the reaction time. Hexagonal LaF₃ nanocrystals with uniform particle sizes and bright UC emissions were obtained. The crystal structures of the lanthanide-doped LaF₃ UCNPs were investigated using wide-angle X-ray diffraction. The morphologies and particle sizes of the nanocrystals were determined using transmission electron microscopy. The photoluminescence (PL) spectra of the LaF₃ nanocrystals could be tuned by alter

SUBMITTER: Chien HW 

PROVIDER: S-EPMC7774313 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature