A kind of preparation method of rare earth doped alkaline earth metal sulfide nanomaterial

Abstract

A preparation method of rare earth-doped alkaline earth metal sulfide nanomaterial MS:xmol%Ln, M in MS:xmol%Ln is selected from alkaline earth metals Ca, Sr or Ba; S represents sulfur; Ln represents lanthanide rare earth ions; xmol % represents the percentage of lanthanide rare earth ions in the total number of moles of alkaline earth metals and lanthanide rare earth ions, 0

Description

technical field [0001] The invention belongs to the technical field of nano-luminescent materials, and in particular relates to a preparation method of a rare-earth-doped alkaline-earth metal sulfide nano-material. Background technique [0002] In recent years, rare earth-doped inorganic nanoluminescent materials have received widespread attention. Due to their excellent performance, these materials are widely used in three-dimensional displays, anti-counterfeiting technology, solid-state lasers, optical storage, solar cells, biological detection, and imaging. At present, the research on rare earth doped inorganic nano-fluorescent materials mainly focuses on rare earth doped fluorides (such as NaYF 4 , NaGdF 4 , CaF 2 ) and other systems, there are few studies on rare earth doped alkaline earth metal sulfide (MS) (M=Ca, Sr, Ba) nanoluminescent materials. [0003] Rare earth doped alkaline earth metal sulfides have a cubic phase structure, the space point group is Fm-3m, a...

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Problems solved by technology

Among them, Meijerink et al. reported the use of diisopropyl dithiocarbamate metal salt as a precursor for synthesis. The synthesized nanoparticles are nearly spherical, about 10 nm, and have good dispersion. However, the precursor used in this synthesis method is two The metal salt of isopropyl dithiocarbamate cannot be purchased, and can only be synthesized by oneself, and the synthesis steps are cumbersome, the reaction takes a long time, and the purity is not easy to control, which will affect the synthesis of nanomaterials. Size regulation (AndriesMeijerink et al."Lanthanide-Doped CaS and SrS Luminescent Nanocrystals: ASingle-Source Precursor Approach for Doping", J.Am.Chem.Soc.2014,136,16533-16543)

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