The fluorescence of Bi

3+

has been found to bt efficient in Ca

2

YSbO

6

host. In this paper

the luminescent properties of Bi

3+

in Ca

2

YSbO

6

compounds with monocline structure and the regularities of their variation are reported for the first time. Under 315nm excitation

Ca

2

YSbO

6

:Bi show very strong emission (blue-purple) with a broadband spectrum extending from 350-470nm and peaking at 400nm. The fluorescence at 400nm is belong to

3

P

1

-

1

S

0

electron transition. In Ca

2

Y

1-x

Bi

x

SbO

6

phosphor

the fluorescent intensities of Bi

3+

enhance with the increase of the Bi

3+

concentration till 0.04 molecule. Probably

Ca

2

Y

0.96

Bi

0.04

SbO

6

will bt used for phosphor powder in black light and for a light source to synthesis vitamine c in the future if the experiment on it is done futher.