The phosphor BaAl

12

O

19

: Mn was synthesized by solid state reaction at 1300℃ under the existence of flux. Its XRD diagram showed the intensity increased with the presence of the flux

the intensity of different crystal planes W.. changed with the flux

for example

crystal planes (102)

(107)

(114) and (205) became stronger

while crystal planes(0010) and (304) became weak. These results indicate that the flux not only helped to crystallize the host but also affected on growth of different crystal planes.The UV excitation spectrum consists of three bands peaking at 279urn

360.5nm

384.6nm

which are due to the

6

A

1

2

A

2

(

4

F)

6

A

1

4E(

4

D)

6

A

1

4

T

2

(

4

D) of Mn

2+

transitions

respectively. Its photoluminescence spectra showed there is a stronger emission band peaking at 514nm and a weak emission band peaking at 450nm. The former band is assighed to Mn

2+

-emission

and the latter band may be origin from the host. The emission of Mn

2+

ions indicated that Mn

2+

ions occupy crystallographic site of Al in tetrahedral. The experimental result also indicated that the influence of different flux on the luminescent intensity of the phosphor BaAl

12

O

19

: Mn varied: H

BO

decreased its luminescence

AIF

3

improved a little and BaF

2

improved greatly. The VUV excitation spectrum consists of the bands peaking around 150urn and 195urn that correspond to the host absorption and the 3d

5

3d

4

s

1

Mn

2+

transition. This result reveals that there is an high efficient energy transfer from the host to the activator. The strong absorption at about 150nm also indicates that the phosphor BaAl

12

O

19

: Mn can act as a better candidate of PDP phosphors.