Luminescence properties of the salicylic-RE complex have been studied. The results for salicylic-RE complex doped with Tb

3+

or Tb

3+

/Gd

3+

ions show that they are high efficiency luminescent materials. The energy transfer between salicylic radical and Tb

3+

ions were observed through the measurement of excitation spectrum and emission spectrum as well as fluorescence decay time and it was quite efficient from salicylic radical to Tb

3+

or Tb

3+

/Gd

3+

. The substitution of 4/5 mol Tb

3+

for Gd

3+

ions was obtained with satisfatory results.The following formula can be used to estimate the energy transmission efficiency between salicylic radical and Tb

3+

ions: P=1/τ

*

-1/τ (1) η=1-τ

*

/τ (2) where P is energy transmission probability

η the energy transmission efficiency

and τ and τ

*

are decay time of sal and sal-Tb

3+

respectively.