Synthesis And Luminescence Properties Of Eu³⁺-doped Zinc Borate

In our three-color phosphor,the aluminate system accounts for more than 90%,followed by phosphate system,then the borate system.Compared with aluminate and phosphate,borate in the synthesis temperature,synthesis and other requirements are relatively low,and the product has a high luminous efficiency,good display,small light and so on.Development luminescent with the borate as a substrate material will have a good economic and social benefits.There are many types of zinc borate,simple can be generally written:XZnO-YB2O3-ZH2O.Its research has focused on that flame retardants,additives,and so on.Recently,there have been some reports of rare-earth-doped zinc borate materials.Studies have shown that emitting performance of zinc borate luminescent material is affected by many factors;Eu3+ as a active ions of phosphor is often used in preparation.The Eu3+ ions doped into the matrix borate can be obtained emitting material with excellent performance.In addition,the introduction of transition metal ions in rare earth doped borate compound system will have some impact on fluorescence properties of the compounds.Therefore,it is necessary to studied synthesis and optical properties of the material of zinc borate luminescent rare earth.In this thesis,with hydrothermal synthesis we prepared a series of Eu3+ ions doped zinc borate compound and studied the morphology when the solvents have Mn2+ ions.Papers by infrared spectroscopy,X-ray powder diffraction,scanning electron microscopy and fluorescence characterization methods,effects of different amounts of Eu3+ doped zinc borate compounds on morphology and fluorescence emission properties.Zinc borate is spherical crystalline powder,with Eu3+ doping concentration increases,the fluorescence intensity gradually increased;When the doping concentration of Eu3+ is 28.5%,the fluorescence intensity of the compounds is the strongest and continue to increase the doping concentration of Eu3+ will produce fluorescence quenching phenomenon.We Study the morphology and luminescence properties of the compounds in the presence of Mn2+ ions and found that the morphology and fluorescence intensity of the series of compounds have a certain impact.The concentration of Mn2+ ions is greater,the morphology is more serious damage and the fluorescence intensity is the weaker.