/ CORE/MULTI-SHELL UPCONVERSION FLUORIDE NANOPHOSPHOR SHOWING LUMINESCENCE UNDER VARIOUS EXCITATION WAVELENGTHS AND METHODS OF FORMING THE SAME

摘要

The present invention provides a fluoride-based nanophosphor having a light emitting nanoparticle represented by the following Formula 1 as a core. [Formula 1] LiEr _1-xy L _y F ₄ :Tm ³⁺_x (In Formula 1, x is a real number of 0≦x≦0.3, and y is a real number of 0≦y≦0.8, but y is selected within a range satisfying 0≦x+y≦0.9, and the L Is any one selected from the group consisting of Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Lu, and combinations thereof)