Synthesis and Luminescent Properties of High Brightness BaAl4 Sb2 O12∶Eu2+Phosphors
White LED as the fourth generation of lighting light source has been widely used in various areas of peo-ple's life,in which phosphor is one of the key materials to obtain high performance white LED.How to prepare high-performance phosphors in a simple way is a challenging task for researchers nowadays.In this paper,BaAl4Sb2O12∶Eu2+(BASO∶Eu2+)phosphors were successfully prepared by using a high-temperature solid-phase method with the ad-dition of fluxes H3BO3,NH4Cl,SrF2,LiF and BaF2.The crystal structure analysis,emission spectra,X-ray photo-electron spectroscopy(XPS),and fluorescence lifetime showed that the excess Sb2O3 could effectively reduce Eu3+to Eu2+,increase the fluorescence intensity of Eu2+at 563 nm by about 12.5 times,and the internal quantum efficiency(IQE)could reach 96.14%.And the effects of different fluxes on the crystal structure,fluorescence intensity and internal quantum efficiency of phosphor were investigated.The method adopted in this experiment is simple,avoids the use of hazardous reducing gas sintering,and is easy to be applied industrially and reduce the production cost.
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