A facile method to prepare NaMn3F10:Yb,Er//m upconversion nanoparticles with single band (Conference Presentation)

Here, we reported a novel and facile thermal decomposited method to prepare NaMnF3 :Yb,Er/Tm upconversion nanoparticles (UCNPs). In this method, Rare earth acetate and manganese(II) 2,4-pentanedionato were used as raw material. The as-synthesized NaMnF3 :Yb,Er/Tm nanoparticles were monodispersed, uniform and their sizes were both smaller than 10 nm. The NaMnF3 :Yb,Er and NaMnF3 :Yb,Tm nanoparticles radiated intense pure red emission and near-infared emission under the excitation of 980 nm laser. Then, the core/shell structured NaMnF3 :Yb,Er/Tm@NaMnF3 nanoparticles were prepared to enhance the UC emission effectively.