PREPARING METHOD FOR UPCONVERSION NANOPARTICLE PHOSPHORS AND UPCONVERSION NANOPARTICLE PHOSPHORS PREPARED BY THE METHOD

摘要

The present invention relates to a method of producing an upconverting phosphor in the form of a nanopowder, comprising: synthesizing an upconverting phosphor to form a target; And irradiating a pulsed laser onto the surface of the target in a state in which the target is immersed in the liquid to produce an upconverted nano-fluorescent substance. The present invention has the effect of producing an up-conversion nano-phosphor having a size of nano unit and a shape of a spherical shape by irradiating a pulsed laser to an up-converted phosphor target immersed in a liquid. In addition, there is an effect that a colloidal suspension in which an upconverted nano-fluorescent substance is uniformly dispersed can be produced without using a surfactant.