The Eu

3+

-doped glasses are well known as technologically important material and have been used widely in laser

luminescent material

and optical data storage.The glass doped with rare earth(RE)with wide emission band is very important for their application in wide band communication and other fields.The wide emission band of RE-doped in Bi-based glass is expected due to the high reflective index of Bi.The(60-x)Bi

2

O

3

xPbO30B

2

O

3

10ZnO(x=0

10

30

mol fraction)glasses doped with Eu

3+

in 1% were fabricated by melting method.The emission situation of other rare earth ions can be reflected from that of Eu

3+

in the glass due to the similar size of ionic diameter and chemical properties.The DTA curves

absorption

phonon side-band

emission and excitation spectra of the glasses were measured.The Ω

2

and Ω

4

parameters of Eu

3+

for optical transition were calculated from their emission spectra in terms of reduced matrix

U

λ

(λ=2

4

6)character for optical transitions.The results indicated that the intensity parameters Ω

2

and Ω

4

decrease slightly as the increase of PbO contents.It suggests that the symmetry becomes higher

the band of Eu and O atoms becomes weaker and the covalency decreases slightly.The difference between glass transition temperature(

T

g

)and the crystallization onset temperature decreases as increase of PbO content

indicating that the thermal stability of the glass becomes worse.The electron-phonon coupling becomes weaker as increase of PbO content.