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Rare earth luminescent materials due to excellent performance with high luminous efficiency, high color purity, stability the fluorescence long life and physical and chemical properties have been widely used in various fields of national defense, aerospace, and industrial and agricultural. However, iron, copper and other transition metal impurities cause the light emitting material emitting intensity reduction or complete loss of the light emitting ability, i.e. quenching effect. This paper studies the transition metal ions (Fe 2 Fe 3 , the Cu 2 ) the the Eu 2 activated alkaline earth aluminum formate light-emitting materials and the Eu 3 -activated rare earth luminescent properties of organic complexes, content mainly includes the following three aspects: 1, the SrAl 2 O 4 : of Eu 2 , the Dy 3 long afterglow luminescent powder Preparation and iron quenching of light-emitting powder, SrAl nano-coating prepared with different iron content < sub> 2 O 4 : the Eu 2 , the Dy 3 , by X-ray diffraction (XRD), fluorescence spectra and afterglow curve , etc. The testing investigated by means of iron impurities on the crystal structure and luminescence properties of the light-emitting powder. The results show that the presence of trace iron did not cause structural changes in the crystalline phase of the light-emitting powder, but reduces luminous intensity, and with increasing iron content, the luminous intensity gradually weakened, experimental research and analysis, the cause of the quenching. 2, Eu - complexes of carboxylic acid synthesis and iron quenching in the liquid phase synthesis Europium iron (II, III), phthalic europium iron (II, III), Eu - iron (II, III) - benzoic acid - phenanthroline and EDTA europium iron (II, III) series of complexes studied the relationship between the content of iron complexes fluorescence properties, infrared spectra and fluorescence spectra of the complexes were determined. The results show that the the trace Fe 2 , the Fe 3 the presence of 2 reduces the fluorescence intensity of the Europium complexes, and with the increase of the Cu 2 content of the fluorescence intensity gradually weakened, discusses the sudden eliminate the cause.
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