A plant growth lamp led red fluorescent material and method

The present invention provides a plant growth LED lamp red fluorescent material and a preparation method, the red fluorescent material is doped with tetravalent manganese ions gallium lithium titanate having a chemical formula LiGaTiO4: Mn4 +, Li: Ga: Ti: Mn = 1: 1: (1-x): x, wherein 0.001≤x≤0.1. The preparation method is: respectively weighed accurately lithium-containing compound, a gallium-containing compounds, titanium-containing compound and the manganese compound raw material, mixing after grinding, controlling the temperature 450-600 deg.] C, calcined 3-10 hours; after calcining the sample was removed, re-mixing after grinding, controlling the temperature of 900 ℃ -1100 ℃, firing temperature for 5-10 hours, furnace cooling to room temperature, can be prepared tetravalent manganese ions doped gallium lithium titanate. Red fluorescent material of the present invention have a broad absorption in the ultraviolet and blue light, ultraviolet can efficiently be converted to red and blue light, 600-780nm emission center was 668 nm spectral region, may be grown in the white LED lighting plants and the red LED has been applied .