SPINEL-BASED COLOR-CONTROLLABLE UP-CONVERSION LUMINESCENT MATERIAL, PREPARATION METHOD AND APPLICATION THEREOF

摘要

Provided is spinel-based color-controllable up-conversion luminescent material, preparation method and application thereof. The above color-controllable up-conversion luminescent material Zn(Al _xGa _1-x) ₂O ₄: Yb ³⁺,Tm ³⁺,Er ³⁺ has good luminescent intensity, meanwhile, after doping into Al ³⁺ ions, the luminescent intensity and up-conversion efficiency of the material are improved, furthermore, by controlling the doping amount of the Al ³⁺ ions, the emitted light color of the material can be directly controlled. As the doping amount of the Al ³⁺ ions is increased, the blue shift of the light emitted by the prepared material first appears, then, as the doping amount of the Al ³⁺ ions continues to be increased, the red shift of the light emitted by the prepared material first takes place. Such a regularly controllable multi-color up-conversion luminescent material can be used in the field of coloration, such as fluorescent paint and luminescent dye, the coloration range of the prior luminescent materials is broadened, and the controllability of coloration is improved.