Rare earth-aluminium/gallate based fluorescent material and manufacturing method thereof

A manufacturing method of rare earth-aluminium/gallate based fluorescent material, comprising:

• dissolving corresponding metal compound of metal nanoparticle, and then mixing with assistant agent and reducing agent successively, to obtain metal nanoparticle collosol;
• adding the metal nanoparticle collosol into polyvinylpyrrolidone, mixing and stirring to obtain metal nanoparticle blended collosol;
• according to the stoichiometric ratio of the corresponding elements in the chemical formula of (Y1-xCex)3(Al1-yGay)5O12, mixing yttrium salt, cerium salt, aluminum salt, gallium salt, then adding into said metal nanoparticle blended collosol under the temperature in the range of 70 to 90° C., obtaining metal mixed solution, wherein <x≦0.5, 0≦y≦1.0;
• adding citric acid monohydrate into said metal mixed solution, then adjusting pH of mixed solution to 3 to 5 with weak base, keep the temperature constant in a range of 70 to 90° C. for 3 to 6 hours, then drying to obtain precursor;
• pre-burning said precursor, then calcinating in reducing atmosphere, cooling and then grinding, obtaining said rare earth-aluminium/gallate based fluorescent material.