| abstract |
A phosphorescent light emitting material, the material is a complex compound comprises a beta-diketonate ligand, a sulfoxide ligand and a triple charge rare earth group metal ion, the phosphorescent light emitting material has a following structure: n n n wherein M is a triple charge rare earth group metal ion, R 2 is hydrogen, R 1 , R 3 ,R 4 and R 5 are selected from the group consisting of C 1 to C 8 straight chain alkyl groups, C 1 to C 8 branch chain alkyl groups and C 6 to C 14 aryl groups. |