Two hole-transporting materials containing carbazole moieties with TPD- and NPB-like structures, 4,4'-bis [ N- ( 4 -carbazolylphenyl) -N-phenylamino ] biphenyl ( CPB ) and 4,4'-bis [ N- ( 4 -carbazolylphenyl ) -N- ( 1 -naphthyl ) amino] biphenyl( CNB), were synthesized via a modified Ullmann reaction. The resulting compounds were thermally stable with high glass transition temperatures ranging from 145 to 147℃ and possessed a good electrochemical reversibility and hole-transporting properties. Typical double-layer device evaluation with the structure ITO/CPB (40 nm)/Alq3 (60 nm)/LiF/Al demonstrated that they were promising hole-transporting materials with a current efficiency of 5. 25 cd/A and a power efficiency of 2. 00 lm/W.