Ambipolar diphenylamino end-capped oligofluorenylthiophenes as excellent electron-transporting emitters.
In addition to hole transport, diphenylamino-end-capped oligofluorenylthiophenes can exhibit efficient electron transport, in which the oligothiophene central core acts as an excellent electron-transporting moiety. The highly efficient undoped multilayer OLEDs using OF(2)TTP-NPh and OF(2)QTP-NPh as an electron-transporting emitter exhibited a maximum luminance of 19,800 and 11,800 cd m(-2) with a luminance efficiency up to 5.3 and 1.0 cd A(-1), respectively.
Department of Chemistry and Centre for Advanced Luminescence Materials, Hong Kong Baptist University, Hong Kong SAR, China.
Zhong Hui
ZH
Li
Man Shing
MS
Wong
Ye
Y
Tao
Hiroshi
H
Fukutani