High-performance blue electroluminescent devices based on 2-(4-biphenylyl)-5-(4-carbazole-9-yl)phenyl-1,3,4-oxadiazole.
An electron transporting moiety (1,3,4-oxadiazole) and a hole transporting moiety (carbazole) were combined to create 2-(4-biphenylyl)-5-(4-carbazole-9-yl)phenyl-1,3,4-oxadiazole (CzOxa), a three layer device with a configuration of ITO/TPD(50 nm)/CzOxa(40 nm)/AlQ(40 nm)/Mg0.9Ag0.1(200 nm)/Ag(80 nm) which exhibited a blue emission peak at approximately 470 nm (x = 0.14, y = 0.19) with a maximum luminance of 26,200 cd m(-2) at a drive voltage of 15 V and a maximum luminous efficiency of 2.25 lm W(-1).
Guan
Min
M
State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing, 100871, PR China.
Bian
Zu Qiang
ZQ
Zhou
Yi Feng
YF
Li
Fu You
FY
Li
Zhong Jun
ZJ
Huang
Chun Hui
CH
D002227:Carbazoles / Q000737:chemistry*; D004735:Energy Transfer; D005456:Fluorescent Dyes / Q000737:chemistry*; D049449:Luminescence; D008956:Models, Chemical; D010069:Oxadiazoles / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
C485196:2-(4-biphenylyl)-5-(4-carbazole-9-yl)phenyl-1,3,4-oxadiazole; D002227:Carbazoles; D005456:Fluorescent Dyes; D010069:Oxadiazoles