The temperature dependence of GdVO

4

:Eu

3+

luminescence from Eu

3+

5

D

0

7

F

J

transition excited by 313 and 365nm of high pressure mercury lamp above room temperature has been studied including the emission spectra at different temperature and the emission intensity of Eu

3+

as function of temperature.In addition

the excitation spectrum of GdVO

4

:Eu

3+

with emission wavelength 619nm at RT was measured. The characteristic emissions of Eu

3+

were observed

including 608

616

619nm of

5

D

0

7

F

2

transition

594

598nm of

5

D

0

7

F

1

transition and 538nm of

5

D

1

7

F

1

transition.Each of them increases with rising temperature.And the relative intensity of the emission lines maintains constant each other.In the range of 300～600K

each emission line increases as temperature rises

especially above 400K

and there is a rapid increase without intensity saturation up to 600K.The emission intensity at 600K is twenties time stronger than that at 300K.We observed that the excitation spectrum of 619nm emission contains two main excitation bands peaked at about 250 and 310nm

beside the intrinsic excitation of Eu

3+

.But the intensity of intrinsic excitation is weaker than that of the excitation bands at 250

310nm. When Eu

3+

is excited by 365nm which is Eu

3+

intrinsic excitation

there are two ways to deplete its energy.One is cascade down to

5

D

J

states according to the order of

5

D

3

5

D

2

5

D

1

5

D

0

.The other is to be promoted thermally to charge transfer state and sequentially to feed

5

D

0

without passing by cascade from higher

5

D state by which

5

D

0

can be excited more effectively.The possibility of the latter process depends on temperature intensively.Therefore

when temperature rises

more Eu

3+

can be excited into

5

D

0

.Using this model the experimental result can be explained reasonably.If Eu

3+

is excited by 313nm which can be the sorption by VO

4

3-

it can also be promoted thermally into charge transfer state. In conclusion

the intensity of the luminescence excited by 313

365nm increases rapidly as temperature rises up to 600K.The CTS of Eu

3+

as a middle state plays an important role which can make the excitation energy transfer to

5

D

0

effectively.Such process is more remarkable when the temperature rises.With high temperature property

GdVO

4

:Eu can be used in high temperature environment.