Undoped blue organic light-emitting diodes using 2-diphenylaminofluoren-7-ylstyryl derivatives.
Blue fluorescent materials based on diphenylaminofluorenylstyryl derivatives connected with the various end-capping aromatic groups were synthesized and characterized. An OLED, using (E)-9,9-diethyl-7-(4-(4-fluoronaphthalen-1-yl)styryl)-N,N-diphenyl-9 H-fluoren-2-amine(5) in emitting layer, was fabricated. This device showed the highly efficient blue emission with the maximum luminance of 5138 cd/m2, the luminous efficiency of 3.92 cd/A, the power efficiency of 3.17 lm/W, the external quantum efficiency of 2.90% at 20 mA/cm2 and CIE x, y coordinates of (0.14, 0.17).
Heung Soo
HS
Jang
Ji Young
JY
Song
Kum Hee
KH
Lee
Dong Hwan
DH
Lim
Seok Jae
SJ
Lee
Young Kwan
YK
Kim
Seung Soo
SS
Yoon
D005449:Fluorenes / Q000737:chemistry*; D008027:Light; D009682:Magnetic Resonance Spectroscopy; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013056:Spectrophotometry, Ultraviolet
D005449:Fluorenes