A deep-blue emitter with electron transporting property to improve charge balance for organic light-emitting device.
Highly efficient deep-blue organic light-emitting devices (OLEDs) have been fabricated using 2,7-di(2,2':6',2″-terpyridin-4-yl)-9,9-dioctyl-9H-fluorene (DTPF) as the emitter, which has a wide energy gap, high emission quantum yield (Φf = 0.88), and high electron transporting property to improve the charge balance. A high efficiency of 2.55 cd/A and 2.67 lm/W are obtained in OLED. The device also exhibits a low turn-on voltage of 3.0 V and Commission Internationale de l'Éclairage (CIE) coordinates of (0.16, 0.09).
State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University , Beijing 100871, P. R. China.
Xing
X
Xing
Lipei
L
Zhang
Rui
R
Liu
Suyue
S
Li
Bo
B
Qu
Zhijian
Z
Chen
Wenfang
W
Sun
Lixin
L
Xiao
Qihuang
Q
Gong