Eu

2+

doped BaAl

12

O

19

phosphorswere prepared by using the sol gelmethod

and their structure and luminescence propertieswere characterized by X-ray diffraction(XRD) analysis and fluorescence spectrometry.The results showed thata single hexagonal BaAl

12

O

19

crystal structurewas synthesized and the emission spectrum of BaAl

12

O

19

:Eu exhibited a broad asymmetric band

which was composed of three emission peaks at 438

462

511 nm

respectively.The position and intensity of emission band were affected by crystallization temperature

Eu

2+

concentration and Al

3+

content. With crystallization temperature increasing

the emission intensity of 438 nm significantly increaseed

but the emission intensity of 511 nm decreaseed.With Eu

2+

concentration increasing

the emission peak shifted to longerwavelength.The optimum concentration of Eu

2+

was 10%.The emission intensity increased effectively in blue light region and decreased in green light region by Al

3+

content reducing.