Near ultraviolet broadband excited efficient red fluorescent powder and preparation method thereof

The invention discloses a near ultraviolet broadband excited efficient red fluorescent powder and a preparation method thereof, the chemical expression of the red fluorescent powder is LiKBi2 (1-x) Eu2x (MoO4) 4, xlt; 1; the preparation method comprises the following steps: 1, weighing compounds of corresponding ions according to a chemical formula LiKBi2 (1-x) Eu2x (MoO4) 4; 2, putting the raw materials weighed in the step 1 into an agate mortar, and grinding for 30 minutes to obtain uniform mixed powder; and 3, putting the mixed powder obtained in the step 2 into a corundum crucible, carrying out heat treatment in a muffle furnace, cooling, and grinding to obtain the efficient red fluorescent powder. The prepared red fluorescent powder is high in luminous efficiency and short in response time, the excitation range can cover the near ultraviolet range of 300-400 nm, the red fluorescent powder can be suitable for different chips, the preparation temperature is low, the method is simple, raw materials needed f