Disclosed herein is a red phosphorescent compound of the following Formula 1: wherein is R1 is a C1-C4
alkoxy group, R2, R3, R4 and R5 are independently selected from
hydrogen, C1-C4
alkyl groups and C1-C4 alkoxy groups, and is selected from 2,4-pentanedione, 2,2,6,6,-tetramethylheptane-3,5-dione, 1,3-propanedione, 1,3-butanedione, 3,5-heptanedione, 1,1,1-trifluoro-2,4-pentanedione, 1,1,1,5,5,5-hexafluoro-2,4-pentanedione, and 2,2-dimethyl-3,5-hexanedione. Further disclosed herein is an organic electroluminescent (EL) device comprising an
anode, a hole injecting layer, a
hole transport layer, a light-emitting layer, an
electron transport layer, an
electron injecting layer, and a
cathode laminated in this order wherein one of the red phosphorescent compounds is used as a
dopant of the light-emitting layer.